Fixed bugs and added hourly forecast

README.md

@@ -36,10 +36,12 @@ which yield the following:
 
 ```json
 {
-  "date": "Thursday, 2025/06/19",
+  "date": "Thursday, 2025/07/31",
-  "temperature": "33°C",
+  "temperature": "29°C",
+  "min": "19°C",
+  "max": "29°C",
   "condition": "Clear",
-  "feelsLike": "36°C",
+  "feelsLike": "29°C",
   "emoji": "☀️"
 }
 ```
@@ -55,10 +57,12 @@ which yields:
 
 ```json
 {
-  "date": "Thursday, 2025/06/19",
+  "date": "Thursday, 2025/07/31",
-  "temperature": "65°F",
+  "temperature": "61°F",
+  "min": "51°F",
+  "max": "61°F",
   "condition": "Clear",
-  "feelsLike": "68°F",
+  "feelsLike": "61°F",
   "emoji": "☀️"
 }
 ```
@@ -105,6 +109,8 @@ As in the previous examples, you can append the `i` query parameter to get resul
 in imperial units.
 
 ## Forecast
+
+### Daily
 The `/forecast/:city` endpoint allows you to get the weather forecast of the
 next 4 days. For example:
 
@@ -128,7 +134,8 @@ which yields:
         "arrow": "↗️",
         "direction": "SSW",
         "speed": "14.7 km/h"
-      }
+      },
+      "rainProbability": "100%"
     },
     {
       "date": "Wednesday, 2025/05/07",
@@ -141,7 +148,8 @@ which yields:
         "arrow": "↘️",
         "direction": "NNW",
         "speed": "13.9 km/h"
-      }
+      },
+      "rainProbability": "100%"
     }
   ]
 }
@@ -150,6 +158,48 @@ which yields:
 As in the previous examples, you can append the `i` query parameter to get results
 in imperial units.
 
+### Hourly
+You can also get the hourly forecast of a time window of 9 hours by appending
+the `h`(hourly) query parameter to the URL:
+
+```sh
+curl -s 'http://127.0.0.1:3000/forecast/tapei?h' | jq
+```
+
+```json
+{
+  "forecast": [
+    {
+      "time": "2:00 PM",
+      "temperature": "26°C",
+      "condition": "Clouds",
+      "emoji": "☁️",
+      "wind": {
+        "arrow": "↘️",
+        "direction": "NW",
+        "speed": "23.3 km/h"
+      },
+      "rainProbability": "0%"
+    },
+    {
+      "time": "3:00 PM",
+      "temperature": "27°C",
+      "condition": "Clouds",
+      "emoji": "☁️",
+      "wind": {
+        "arrow": "↘️",
+        "direction": "NW",
+        "speed": "20.2 km/h"
+      },
+      "rainProbability": "0%"
+    }
+  ]
+}
+```
+
+As in the previous examples, you can append the `i` query parameter to get results
+in imperial units(**tip**: you can mix both parameter using `&`).
+
 ## Moon
 
 The `/moon` endpoint provides the current moon phase and its emoji representation:

compose.yml

@@ -4,7 +4,7 @@ services:
     build: .
     container_name: "zephyr"
     environment:
-      ZEPHYR_ADDR: 127.0.0.1 # Listen address
+      ZEPHYR_ADDR: 0.0.0.0   # Listen address
       ZEPHYR_PORT:  3000     # Listen port
       ZEPHYR_TOKEN: ""       # OpenWeatherMap API Key
       ZEPHYR_CACHE_TTL: 3    # Cache time-to-live in hour

controller/controller.go

@@ -58,20 +58,46 @@ func fmtWind(windSpeed string, isImperial bool) string {
 }
 
 func fmtKey(key string) string {
-	// Format cache/database keys by replacing whitespaces with '+' token
+	// Cache/database key is formatted by:
-	// and making them uppercase
+	// 1. Removing leading and trailing whitespaces
-	return strings.ToUpper(strings.ReplaceAll(key, " ", "+"))
+	// 2. Replacing in-between spaces using the '+' token
+	// 3. Making the key uppercase
+	return strings.ToUpper(strings.ReplaceAll(strings.TrimSpace(key), " ", "+"))
 }
 
-func deepCopyForecast(original types.Forecast) types.Forecast {
+func fmtDailyForecast(forecast *types.DailyForecast, isImperial bool) {
-	// Copy the outer structure
+	for idx := range forecast.Forecast {
-	fc_copy := original
+		val := &forecast.Forecast[idx]
+		val.Min = fmtTemperature(val.Min, isImperial)
+		val.Max = fmtTemperature(val.Max, isImperial)
+		val.FeelsLike = fmtTemperature(val.FeelsLike, isImperial)
+		val.Wind.Speed = fmtWind(val.Wind.Speed, isImperial)
+	}
+}
 
-	// Allocate enough space
+func fmtHourlyForecast(forecast *types.HourlyForecast, isImperial bool) {
-	fc_copy.Forecast = make([]types.ForecastEntity, len(original.Forecast))
+	for idx := range forecast.Forecast {
+		val := &forecast.Forecast[idx]
+		val.Temperature = fmtTemperature(val.Temperature, isImperial)
+		val.Wind.Speed = fmtWind(val.Wind.Speed, isImperial)
+	}
+}
 
-	// Copy inner structure
+func deepCopyForecast[T types.DailyForecast | types.HourlyForecast](original T) T {
-	copy(fc_copy.Forecast, original.Forecast)
+	var fc_copy T
+
+	switch any(original).(type) {
+	case types.DailyForecast:
+		orig := any(original).(types.DailyForecast)
+		fc_copy = any(types.DailyForecast{
+			Forecast: append([]types.DailyForecastEntity(nil), orig.Forecast...),
+		}).(T)
+	case types.HourlyForecast:
+		orig := any(original).(types.HourlyForecast)
+		fc_copy = any(types.HourlyForecast{
+			Forecast: append([]types.HourlyForecastEntity(nil), orig.Forecast...),
+		}).(T)
+	}
 
 	return fc_copy
 }
@@ -93,6 +119,8 @@ func GetWeather(res http.ResponseWriter, req *http.Request, cache *types.Cache[t
 	if found {
 		// Format weather object and then return it
 		cachedValue.Temperature = fmtTemperature(cachedValue.Temperature, isImperial)
+		cachedValue.Min = fmtTemperature(cachedValue.Min, isImperial)
+		cachedValue.Max = fmtTemperature(cachedValue.Max, isImperial)
 		cachedValue.FeelsLike = fmtTemperature(cachedValue.FeelsLike, isImperial)
 
 		jsonValue(res, cachedValue)
@@ -119,6 +147,8 @@ func GetWeather(res http.ResponseWriter, req *http.Request, cache *types.Cache[t
 
 		// Format weather object and then return it
 		weather.Temperature = fmtTemperature(weather.Temperature, isImperial)
+		weather.Min = fmtTemperature(weather.Min, isImperial)
+		weather.Max = fmtTemperature(weather.Max, isImperial)
 		weather.FeelsLike = fmtTemperature(weather.FeelsLike, isImperial)
 
 		jsonValue(res, weather)
@@ -219,7 +249,13 @@ func GetWind(res http.ResponseWriter, req *http.Request, cache *types.Cache[type
 	}
 }
 
-func GetForecast(res http.ResponseWriter, req *http.Request, cache *types.Cache[types.Forecast], vars *types.Variables) {
+func GetForecast(
+	res http.ResponseWriter,
+	req *http.Request,
+	dCache *types.Cache[types.DailyForecast],
+	hCache *types.Cache[types.HourlyForecast],
+	vars *types.Variables,
+) {
 	if req.Method != http.MethodGet {
 		jsonError(res, "error", "method not allowed", http.StatusMethodNotAllowed)
 		return
@@ -232,49 +268,54 @@ func GetForecast(res http.ResponseWriter, req *http.Request, cache *types.Cache[
 	// Check whether the 'i' parameter(imperial mode) is specified
 	isImperial := req.URL.Query().Has("i")
 
-	cachedValue, found := cache.GetEntry(fmtKey(cityName), vars.TimeToLive)
+	// Check whether the 'h' parameter(hourly forecast) is specified
+	if req.URL.Query().Has("h") {
+		cachedValue, found := hCache.GetEntry(fmtKey(cityName), vars.TimeToLive)
 		if found {
 			forecast := deepCopyForecast(cachedValue)
-
+			fmtHourlyForecast(&forecast, isImperial)
-		// Format forecast object and then return it
+			jsonValue(res, forecast)
-		for idx := range forecast.Forecast {
+			return
-			val := &forecast.Forecast[idx]
-
-			val.Min = fmtTemperature(val.Min, isImperial)
-			val.Max = fmtTemperature(val.Max, isImperial)
-			val.FeelsLike = fmtTemperature(val.FeelsLike, isImperial)
-			val.Wind.Speed = fmtWind(val.Wind.Speed, isImperial)
 		}
 
-		jsonValue(res, forecast)
-	} else {
-		// Get city coordinates
 		city, err := model.GetCoordinates(cityName, vars.Token)
 		if err != nil {
 			jsonError(res, "error", err.Error(), http.StatusBadRequest)
 			return
 		}
 
-		// Get city forecast
+		forecast, err := model.GetForecast[types.HourlyForecast](&city, vars.Token, model.HOURLY)
-		forecast, err := model.GetForecast(&city, vars.Token)
 		if err != nil {
 			jsonError(res, "error", err.Error(), http.StatusBadRequest)
 			return
 		}
 
-		// Add result to cache
+		hCache.AddEntry(deepCopyForecast(forecast), fmtKey(cityName))
-		cache.AddEntry(deepCopyForecast(forecast), fmtKey(cityName))
+		fmtHourlyForecast(&forecast, isImperial)
-
+		jsonValue(res, forecast)
-		// Format forecast object and then return it
+	} else { // Daily forecast(default)
-		for idx := range forecast.Forecast {
+		cachedValue, found := dCache.GetEntry(fmtKey(cityName), vars.TimeToLive)
-			val := &forecast.Forecast[idx]
+		if found {
-
+			forecast := deepCopyForecast(cachedValue)
-			val.Min = fmtTemperature(val.Min, isImperial)
+			fmtDailyForecast(&forecast, isImperial)
-			val.Max = fmtTemperature(val.Max, isImperial)
+			jsonValue(res, forecast)
-			val.FeelsLike = fmtTemperature(val.FeelsLike, isImperial)
+			return
-			val.Wind.Speed = fmtWind(val.Wind.Speed, isImperial)
 		}
 
+		city, err := model.GetCoordinates(cityName, vars.Token)
+		if err != nil {
+			jsonError(res, "error", err.Error(), http.StatusBadRequest)
+			return
+		}
+
+		forecast, err := model.GetForecast[types.DailyForecast](&city, vars.Token, model.DAILY)
+		if err != nil {
+			jsonError(res, "error", err.Error(), http.StatusBadRequest)
+			return
+		}
+
+		dCache.AddEntry(deepCopyForecast(forecast), fmtKey(cityName))
+		fmtDailyForecast(&forecast, isImperial)
 		jsonValue(res, forecast)
 	}
 }

main.go

@@ -46,7 +46,7 @@ func main() {
 	})
 
 	http.HandleFunc("/forecast/", func(res http.ResponseWriter, req *http.Request) {
-		controller.GetForecast(res, req, &cache.ForecastCache, &vars)
+		controller.GetForecast(res, req, &cache.DailyForecastCache, &cache.HourlyForecastCache, &vars)
 	})
 
 	http.HandleFunc("/moon", func(res http.ResponseWriter, req *http.Request) {

model/forecastModel.go

@@ -2,6 +2,7 @@ package model
 
 import (
 	"encoding/json"
+	"math"
 	"net/http"
 	"net/url"
 	"strconv"
@@ -11,7 +12,14 @@ import (
 	"github.com/ceticamarco/zephyr/types"
 )
 
-// Structures representing the JSON response
+type FCType int
+
+const (
+	DAILY FCType = iota
+	HOURLY
+)
+
+// Structures representing the daily forecast
 type dailyRes struct {
 	Temp struct {
 		Min float64 `json:"min"`
@@ -27,85 +35,182 @@ type dailyRes struct {
 	} `json:"weather"`
 	WindSpeed float64 `json:"wind_speed"`
 	WindDeg   float64 `json:"wind_deg"`
+	RainProb  float64 `json:"pop"`
 	Timestamp int64   `json:"dt"`
 }
 
-type forecastRes struct {
+type dailyForecastRes struct {
 	Daily []dailyRes `json:"daily"`
 }
 
-func getForecastEntity(dailyForecast dailyRes) types.ForecastEntity {
+// Structure representing the hourly forecast
+type hourlyRes struct {
+	Temperature float64 `json:"temp"`
+	Weather     []struct {
+		Title       string `json:"main"`
+		Description string `json:"description"`
+		Icon        string `json:"icon"`
+	} `json:"weather"`
+	WindSpeed float64 `json:"wind_speed"`
+	WindDeg   float64 `json:"wind_deg"`
+	RainProb  float64 `json:"pop"`
+	Timestamp int64   `json:"dt"`
+}
+
+type hourlyForecastRes struct {
+	Hourly []hourlyRes `json:"hourly"`
+}
+
+func getForecastEntity[T types.DailyForecastEntity | types.HourlyForecastEntity, K dailyRes | hourlyRes](forecast K) T {
+	switch fc := any(forecast).(type) {
+	case dailyRes:
 		// Format UNIX timestamp as 'YYYY-MM-DD'
-	utcTime := time.Unix(int64(dailyForecast.Timestamp), 0)
+		utcTime := time.Unix(int64(fc.Timestamp), 0)
 		weatherDate := types.ZephyrDate{Date: utcTime.UTC()}
 
 		// Set condition accordingly to weather description
 		var condition string
-	switch dailyForecast.Weather[0].Description {
+		switch fc.Weather[0].Description {
 		case "few clouds":
 			condition = "SunWithCloud"
 		case "broken clouds":
 			condition = "CloudWithSun"
 		default:
-		condition = dailyForecast.Weather[0].Title
+			condition = fc.Weather[0].Title
 		}
 
 		// Get emoji from weather condition
-	isNight := strings.HasSuffix(dailyForecast.Weather[0].Icon, "n")
+		emoji := GetEmoji(condition, false)
-	emoji := GetEmoji(condition, isNight)
 
 		// Get cardinal direction and wind arrow
-	windDirection, windArrow := GetCardinalDir(dailyForecast.WindDeg)
+		windDirection, windArrow := GetCardinalDir(fc.WindDeg)
 
-	return types.ForecastEntity{
+		// Round rain probability to the nearest integer
+		rainProb := int64(math.Round(fc.RainProb * 100))
+
+		return any(types.DailyForecastEntity{
 			Date:      weatherDate,
-		Min:       strconv.FormatFloat(dailyForecast.Temp.Min, 'f', -1, 64),
+			Min:       strconv.FormatFloat(fc.Temp.Min, 'f', -1, 64),
-		Max:       strconv.FormatFloat(dailyForecast.Temp.Max, 'f', -1, 64),
+			Max:       strconv.FormatFloat(fc.Temp.Max, 'f', -1, 64),
-		Condition: dailyForecast.Weather[0].Title,
+			Condition: fc.Weather[0].Title,
 			Emoji:     emoji,
-		FeelsLike: strconv.FormatFloat(dailyForecast.FeelsLike.Day, 'f', -1, 64),
+			FeelsLike: strconv.FormatFloat(fc.FeelsLike.Day, 'f', -1, 64),
 			Wind: types.Wind{
 				Arrow:     windArrow,
 				Direction: windDirection,
-			Speed:     strconv.FormatFloat(dailyForecast.WindSpeed, 'f', 2, 64),
+				Speed:     strconv.FormatFloat(fc.WindSpeed, 'f', 2, 64),
 			},
+			RainProb: strconv.FormatInt(rainProb, 10) + "%",
+		}).(T)
+	case hourlyRes:
+		// Format UNIX timestamp as 'YYYY-MM-DD'
+		utcTime := time.Unix(int64(fc.Timestamp), 0)
+		weatherTime := types.ZephyrTime{Time: utcTime.UTC()}
+
+		// Set condition accordingly to weather condition
+		var condition string
+		switch fc.Weather[0].Description {
+		case "few clouds":
+			condition = "SunWithCloud"
+		case "broken clouds":
+			condition = "CloudWithSun"
+		default:
+			condition = fc.Weather[0].Title
+		}
+
+		// Get emoji from weather condition
+		isNight := strings.HasSuffix(fc.Weather[0].Icon, "n")
+		emoji := GetEmoji(condition, isNight)
+
+		// Get cardinal direction and wind arrow
+		windDirection, windArrow := GetCardinalDir(fc.WindDeg)
+
+		// Round rain probability to the nearest integer
+		rainProb := int64(math.Round(fc.RainProb * 100))
+
+		return any(types.HourlyForecastEntity{
+			Time:        weatherTime,
+			Temperature: strconv.FormatFloat(fc.Temperature, 'f', -1, 64),
+			Condition:   fc.Weather[0].Title,
+			Emoji:       emoji,
+			Wind: types.Wind{
+				Arrow:     windArrow,
+				Direction: windDirection,
+				Speed:     strconv.FormatFloat(fc.WindSpeed, 'f', 2, 64),
+			},
+			RainProb: strconv.FormatInt(rainProb, 10) + "%",
+		}).(T)
+	default:
+		var zero T
+		return zero
 	}
 }
 
-func GetForecast(city *types.City, apiKey string) (types.Forecast, error) {
+func GetForecast[T types.DailyForecast | types.HourlyForecast](city *types.City, apiKey string, fcType FCType) (T, error) {
-	url, err := url.Parse(WTR_URL)
+	var forecast T
+
+	baseURL, err := url.Parse(WTR_URL)
 	if err != nil {
-		return types.Forecast{}, err
+		var zero T
+		return zero, err
 	}
 
-	params := url.Query()
+	params := baseURL.Query()
 	params.Set("lat", strconv.FormatFloat(city.Lat, 'f', -1, 64))
 	params.Set("lon", strconv.FormatFloat(city.Lon, 'f', -1, 64))
 	params.Set("appid", apiKey)
 	params.Set("units", "metric")
+
+	switch fcType {
+	case DAILY:
 		params.Set("exclude", "current,minutely,hourly,alerts")
+		baseURL.RawQuery = params.Encode()
 
-	url.RawQuery = params.Encode()
+		res, err := http.Get(baseURL.String())
-
-	res, err := http.Get(url.String())
 		if err != nil {
-		return types.Forecast{}, err
+			var zero T
+			return zero, err
 		}
 		defer res.Body.Close()
 
-	var forecastRes forecastRes
+		var dailyRes dailyForecastRes
-	if err := json.NewDecoder(res.Body).Decode(&forecastRes); err != nil {
+		if err := json.NewDecoder(res.Body).Decode(&dailyRes); err != nil {
-		return types.Forecast{}, err
+			var zero T
+			return zero, err
 		}
 
 		// We skip the first element since it represents the current day
-	// We ignore forecasts after the fourth day
+		// We also ignore forecasts after the fourth day
-	var forecast []types.ForecastEntity
+		var forecastEntities []types.DailyForecastEntity
-	for _, val := range forecastRes.Daily[1:5] {
+		for _, val := range dailyRes.Daily[1:5] {
-		forecast = append(forecast, getForecastEntity(val))
+			forecastEntities = append(forecastEntities, getForecastEntity[types.DailyForecastEntity](val))
+		}
+		forecast = any(types.DailyForecast{Forecast: forecastEntities}).(T)
+
+	case HOURLY:
+		params.Set("exclude", "current,minutely,daily,alerts")
+		baseURL.RawQuery = params.Encode()
+
+		res, err := http.Get(baseURL.String())
+		if err != nil {
+			var zero T
+			return zero, err
+		}
+		defer res.Body.Close()
+
+		var hourlyRes hourlyForecastRes
+		if err := json.NewDecoder(res.Body).Decode(&hourlyRes); err != nil {
+			var zero T
+			return zero, err
 		}
 
-	return types.Forecast{
+		// Get hourly forecast of a time window of 9 hours
-		Forecast: forecast,
+		var forecastEntries []types.HourlyForecastEntity
-	}, nil
+		for _, val := range hourlyRes.Hourly[:9] {
+			forecastEntries = append(forecastEntries, getForecastEntity[types.HourlyForecastEntity](val))
+		}
+		forecast = any(types.HourlyForecast{Forecast: forecastEntries}).(T)
+	}
+
+	return any(forecast).(T), nil
 }

model/geoModel.go

@@ -34,7 +34,7 @@ func GetCoordinates(cityName string, apiKey string) (types.City, error) {
 	}
 
 	if len(geoArr) == 0 {
-		return types.City{}, errors.New("Cannot find this city")
+		return types.City{}, errors.New("cannot find this city")
 	}
 
 	return types.City{

model/statisticsModel.go

@@ -12,7 +12,7 @@ import (
 func GetStatistics(cityName string, statDB *types.StatDB) (types.StatResult, error) {
 	// Check whether there are sufficient and updated records for the given location
 	if statDB.IsKeyInvalid(cityName) {
-		return types.StatResult{}, errors.New("Insufficient or outdated data to perform statistical analysis")
+		return types.StatResult{}, errors.New("insufficient or outdated data to perform statistical analysis")
 	}
 
 	extractTemps := func(weatherArr []types.Weather) ([]float64, error) {

model/weatherModel.go

@@ -53,7 +53,7 @@ func GetWeather(city *types.City, apiKey string) (types.Weather, error) {
 	params.Set("lon", strconv.FormatFloat(city.Lon, 'f', -1, 64))
 	params.Set("appid", apiKey)
 	params.Set("units", "metric")
-	params.Set("exclude", "minutely,hourly,daily,alerts")
+	params.Set("exclude", "minutely,hourly,alerts")
 
 	url.RawQuery = params.Encode()
 
@@ -63,7 +63,7 @@ func GetWeather(city *types.City, apiKey string) (types.Weather, error) {
 	}
 	defer res.Body.Close()
 
-	// Structure representing the JSON response
+	// Structure representing the *current* weather
 	type WeatherRes struct {
 		Current struct {
 			FeelsLike   float64 `json:"feels_like"`
@@ -75,6 +75,12 @@ func GetWeather(city *types.City, apiKey string) (types.Weather, error) {
 				Icon        string `json:"icon"`
 			} `json:"weather"`
 		} `json:"current"`
+		Daily []struct {
+			Temp struct {
+				Min float64 `json:"min"`
+				Max float64 `json:"max"`
+			} `json:"temp"`
+		} `json:"daily"`
 	}
 
 	var weather WeatherRes
@@ -104,6 +110,8 @@ func GetWeather(city *types.City, apiKey string) (types.Weather, error) {
 	return types.Weather{
 		Date:        weatherDate,
 		Temperature: strconv.FormatFloat(weather.Current.Temperature, 'f', -1, 64),
+		Min:         strconv.FormatFloat(weather.Daily[0].Temp.Min, 'f', -1, 64),
+		Max:         strconv.FormatFloat(weather.Daily[0].Temp.Max, 'f', -1, 64),
 		FeelsLike:   strconv.FormatFloat(weather.Current.FeelsLike, 'f', -1, 64),
 		Condition:   weather.Current.Weather[0].Title,
 		Emoji:       emoji,

types/cache.go

@@ -7,7 +7,7 @@ import (
 
 // cacheType, representing the abstract value of a CacheEntity
 type cacheType interface {
-	Weather | Metrics | Wind | Forecast | Moon
+	Weather | Metrics | Wind | DailyForecast | HourlyForecast | Moon
 }
 
 // CacheEntity, representing the value of the cache
@@ -26,7 +26,8 @@ type Caches struct {
 	WeatherCache        Cache[Weather]
 	MetricsCache        Cache[Metrics]
 	WindCache           Cache[Wind]
-	ForecastCache Cache[Forecast]
+	DailyForecastCache  Cache[DailyForecast]
+	HourlyForecastCache Cache[HourlyForecast]
 	MoonCache           CacheEntity[Moon]
 }
 
@@ -35,7 +36,8 @@ func InitCache() *Caches {
 		WeatherCache:        Cache[Weather]{Data: make(map[string]CacheEntity[Weather])},
 		MetricsCache:        Cache[Metrics]{Data: make(map[string]CacheEntity[Metrics])},
 		WindCache:           Cache[Wind]{Data: make(map[string]CacheEntity[Wind])},
-		ForecastCache: Cache[Forecast]{Data: make(map[string]CacheEntity[Forecast])},
+		DailyForecastCache:  Cache[DailyForecast]{Data: make(map[string]CacheEntity[DailyForecast])},
+		HourlyForecastCache: Cache[HourlyForecast]{Data: make(map[string]CacheEntity[HourlyForecast])},
 		MoonCache:           CacheEntity[Moon]{element: Moon{}, timestamp: time.Time{}},
 	}
 }

types/date.go

@@ -33,3 +33,32 @@ func (date ZephyrDate) MarshalJSON() ([]byte, error) {
 
 	return []byte("\"" + fmtDate + "\""), nil
 }
+
+type ZephyrTime struct {
+	Time time.Time
+}
+
+func (t *ZephyrTime) UnmarshalJSON(b []byte) error {
+	s := strings.Trim(string(b), "\"")
+	if s == "" {
+		return nil
+	}
+
+	var err error
+	t.Time, err = time.Parse("15:04", s)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (t ZephyrTime) MarshalJSON() ([]byte, error) {
+	if t.Time.IsZero() {
+		return []byte("\"\""), nil
+	}
+
+	fmtTime := t.Time.Format("3:04 PM")
+
+	return []byte("\"" + fmtTime + "\""), nil
+}

types/forecast.go

@@ -1,8 +1,8 @@
 package types
 
-// The ForecastEntity data type, representing the weather forecast
+// The DailyForecastEntity data type, representing the weather forecast
 // of a single day
-type ForecastEntity struct {
+type DailyForecastEntity struct {
 	Date      ZephyrDate `json:"date"`
 	Min       string     `json:"min"`
 	Max       string     `json:"max"`
@@ -10,9 +10,26 @@ type ForecastEntity struct {
 	Emoji     string     `json:"emoji"`
 	FeelsLike string     `json:"feelsLike"`
 	Wind      Wind       `json:"wind"`
+	RainProb  string     `json:"rainProbability"`
 }
 
-// The Forecast data type, representing a set of ForecastEntity
+// The DailyForecast data type, representing a set of DailyForecastEntity
-type Forecast struct {
+type DailyForecast struct {
-    Forecast []ForecastEntity `json:"forecast"`
+	Forecast []DailyForecastEntity `json:"forecast"`
+}
+
+// The HourlyForecastEntity data type, representing the weather forecast
+// of a single hour
+type HourlyForecastEntity struct {
+	Time        ZephyrTime `json:"time"`
+	Temperature string     `json:"temperature"`
+	Condition   string     `json:"condition"`
+	Emoji       string     `json:"emoji"`
+	Wind        Wind       `json:"wind"`
+	RainProb    string     `json:"rainProbability"`
+}
+
+// The HourlyForecast data type, representing a set of HourlyForecastEntity
+type HourlyForecast struct {
+	Forecast []HourlyForecastEntity `json:"forecast"`
 }

types/weather.go

@@ -4,6 +4,8 @@ package types
 type Weather struct {
 	Date        ZephyrDate `json:"date"`
 	Temperature string     `json:"temperature"`
+	Min         string     `json:"min"`
+	Max         string     `json:"max"`
 	Condition   string     `json:"condition"`
 	FeelsLike   string     `json:"feelsLike"`
 	Emoji       string     `json:"emoji"`