forecast 端點可針對特定地點提供最多 96 小時 (4 天) 的每小時空氣品質預測資訊。每份預測都包含每小時的空氣品質指數和其他資訊：
- 預測的特定時間和日期或時間範圍
- 已翻譯欄位的語言代碼
- 當地或自訂空氣品質指數 (AQI)
- 健康建議
- 主要污染物
- 汙染物濃度
- 關於污染物的其他資訊
- 回應頁面大小
- 調色盤
您可以透過 APIs Explorer 提出即時要求，熟悉 API 和 API 選項：
關於預測要求
您可以使用預測端點，透過 HTTP POST 要求傳送以下資訊，以便要求每小時空氣品質預測資訊：
https://airquality.googleapis.com/v1/forecast:lookup?key=YOUR_API_KEY
在要求主體中加入參數。要求主體包含您想取得空氣品質每小時預測資訊的位置，以及各種選項，可控制回應中包含哪些額外資訊。
關於預測回應
回應主體會提供世界標準時間日期和時間，用於顯示空氣品質預測資訊、空氣品質指數和其他自訂資訊。如果資訊不符合要求的頁面大小，回應主體也會包含符記，用於擷取下一頁。
基本要求範例
以下程式碼說明如何建構預測要求。在這個範例中，您可以指定要顯示每小時空氣品質預測資訊的位置、日期和時間 (從下一個小時開始，最多 96 小時)。
curl -X POST -d '{
"location": {
"latitude": 37.4125333,
"longitude": -122.0840937
},
"dateTime": "2024-02-09T08:00:00Z"
}' \
-H "Content-Type: application/json" \
-H "Accept-Language: *" \
"https://airquality.googleapis.com/v1/forecast:lookup?key=YOUR_API_KEY"
呼叫會產生下列 JSON 回應。
{ "hourlyForecasts": [ { "dateTime": "2024-02-09T08:00:00Z", "indexes": [ { "code": "uaqi", "displayName": "Universal AQI", "aqi": 80, "aqiDisplay": "80", "color": { "red": 0.34509805, "green": 0.74509805, "blue": 0.20784314 }, "category": "Excellent air quality", "dominantPollutant": "pm25" } ] } ], "regionCode": "us" }
包含多個參數的要求範例
以下程式碼說明如何建構含有多個參數的要求主體。在本範例中，您會指定下列項目：
- 位置
- 顯示空氣品質預測資訊的時間範圍
- 語言代碼
- 額外運算 (例如健康建議、主要污染物濃度和其他污染物資訊)
- 調色盤
curl -X POST -d '{
"pageSize": "10",
"universalAqi": "true",
"location": {
"latitude": "40.741895",
"longitude": "-73.989308"
},
"period": {
"startTime": "2024-02-27T13:58:14+02:00",
"endTime": "2024-02-28T16:58:14+02:00"
},
"languageCode": "en",
"extraComputations": [
"HEALTH_RECOMMENDATIONS",
"DOMINANT_POLLUTANT_CONCENTRATION",
"POLLUTANT_ADDITIONAL_INFO"
],
"uaqiColorPalette": "RED_GREEN"
}' \
-H "Content-Type: application/json" \
-H "Accept-Language: *" \
"https://airquality.googleapis.com/v1/forecast:lookup?key=YOUR_API_KEY"
呼叫會產生下列 JSON 回應。
{ { "hourlyForecasts": [ { "dateTime": "2024-02-27T11:00:00Z", "indexes": [ { "code": "uaqi", "displayName": "Universal AQI", "aqi": 75, "aqiDisplay": "75", "color": { "red": 0.43137255, "green": 0.7764706, "blue": 0.20392157 }, "category": "Good air quality", "dominantPollutant": "pm25" } ], "pollutants": [ { "code": "pm25", "displayName": "PM2.5", "fullName": "Fine particulate matter (\u003c2.5µm)", "concentration": { "value": 15.1, "units": "MICROGRAMS_PER_CUBIC_METER" }, "additionalInfo": { "sources": "...", "effects": "..." } } ], "healthRecommendations": { "generalPopulation": "...", "lungDiseasePopulation": "...", "heartDiseasePopulation": "...", "athletes": "...", "pregnantWomen": "..." } }, { "dateTime": "2024-02-27T12:00:00Z", "indexes": [ { "code": "uaqi", "displayName": "Universal AQI", "aqi": 67, "aqiDisplay": "67", "color": { "red": 0.5882353, "green": 0.8392157, "blue": 0.16862746 }, "category": "Good air quality", "dominantPollutant": "pm25" } ], "pollutants": [ { "code": "pm25", "displayName": "PM2.5", "fullName": "Fine particulate matter (\u003c2.5µm)", "concentration": { "value": 19.96, "units": "MICROGRAMS_PER_CUBIC_METER" }, "additionalInfo": { "sources": "...", "effects": "..." } } ], "healthRecommendations": { "generalPopulation": "...", "lungDiseasePopulation": "...", "heartDiseasePopulation": "...", "athletes": "...", "pregnantWomen": "...", "children": "..." } }, /.../ ] } "regionCode": "us", "nextPageToken": "CjMKEglwCFVq9l5EQBH0aoDSUH9SwBoQCgYI1pDirgYSBgiGiOiuBiABKgMCBAMyAmVuOAEQGA==" }
如要查看下一頁的預測資訊，請傳入回應主體結尾處傳回的 nextPageToken：
curl -X POST -d '{
"universalAqi": "true",
"location": {
"latitude": "40.741895",
"longitude": "-73.989308"
},
"period": {
"startTime": "2024-02-27T13:58:14+02:00",
"endTime": "2024-02-28T16:58:14+02:00"
},
"languageCode": "en",
"extraComputations": [
"HEALTH_RECOMMENDATIONS",
"DOMINANT_POLLUTANT_CONCENTRATION",
"POLLUTANT_ADDITIONAL_INFO"
],
"uaqiColorPalette": "RED_GREEN",
"pageToken": "CjMKEglwCFVq9l5EQBH0aoDSUH9SwBoQCgYI1pDirgYSBgiGiOiuBiABKgMCBAMyAmVuOAEQGA=="
}' \
-H "Content-Type: application/json" \
-H "Accept-Language: *" \
"https://airquality.googleapis.com/v1/forecast:lookup?key=YOUR_API_KEY"
這會傳回下一頁的預測資訊：
{ "hourlyForecasts": [ { "dateTime": "2024-02-27T21:00:00Z", "indexes": [ { "code": "uaqi", "displayName": "Universal AQI", "aqi": 74, "aqiDisplay": "74", "color": { "red": 0.44705883, "green": 0.78431374, "blue": 0.2 }, "category": "Good air quality", "dominantPollutant": "o3" } ], "pollutants": [ { "code": "o3", "displayName": "O3", "fullName": "Ozone", "concentration": { "value": 32.07, "units": "PARTS_PER_BILLION" }, "additionalInfo": { "sources": "...", "effects": "..." } } ], "healthRecommendations": { "generalPopulation": "...", "elderly": "...", "lungDiseasePopulation": "...", "heartDiseasePopulation": "...", "athletes": "...", "pregnantWomen": "...", "children": "..." } }, { "dateTime": "2024-02-27T22:00:00Z", "indexes": [ { "code": "uaqi", "displayName": "Universal AQI", "aqi": 75, "aqiDisplay": "75", "color": { "red": 0.43137255, "green": 0.7764706, "blue": 0.20392157 }, "category": "Good air quality", "dominantPollutant": "o3" } ], "pollutants": [ { "code": "o3", "displayName": "O3", "fullName": "Ozone", "concentration": { "value": 30.94, "units": "PARTS_PER_BILLION" }, "additionalInfo": { "sources": "...", "effects": "..." } } ], "healthRecommendations": { "generalPopulation": "...", "lungDiseasePopulation": "...", "heartDiseasePopulation": "...", "athletes": "...", "pregnantWomen": "...", "children": "..." } }, /.../ ] "regionCode": "us" }