forecast 端点
最多可提供给定位置 96 小时（4 天）的每小时空气
质量预报信息。每项预报都包含每小时
空气质量指数以及以下附加信息：
- 预报的特定时间和日期或时间段
- 翻译后字段的语言代码
- 本地或自定义空气质量指数 (AQI)
- 健康状况建议
- 主要污染物
- 污染物浓度
- 有关污染物的其他信息
- 响应页面大小
- 调色板
借助 APIs Explorer，您可以发出实时请求，以便熟悉 API 和 API 选项：
关于预报请求
您可以使用 forecast 端点，通过向以下网址发送 HTTP POST 请求来请求每小时空气质量预报信息：
https://airquality.googleapis.com/v1/forecast:lookup?key=YOUR_API_KEY
在请求正文中添加 参数 。请求正文包含您要获取空气质量每小时预报信息的位置，以及用于控制要在响应中包含哪些附加信息的各种选项。
关于预报响应
响应正文提供用于显示空气 质量预报信息的 UTC 日期和时间、空气质量指数以及其他自定义 信息。如果信息不适合请求的页面大小，响应正文还会包含用于检索下一页的令牌 。
基本请求示例
以下代码展示了如何构建预报请求。在本示例中， 您指定了要显示每小时空气质量预报信息的位置、日期和时间（从下一小时开始，最多 96 小时）。
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"
此调用会生成以下 JSON 响应。
{ "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" }
包含多个参数的请求示例
以下代码展示了如何构建包含多个 参数的请求正文。在本示例中，您指定了以下内容：
- 位置
- 要显示空气质量预报信息的时间段
- 语言代码
- 额外计算（例如健康状况建议、主要污染物 浓度和其他污染物信息）
- 调色板
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"
此调用会生成以下 JSON 响应。
{ { "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==" }
如需查看下一页的预报信息，请传入nextPageToken
响应正文末尾返回的：
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"
这会返回下一页的预报信息：
{ "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" }
试试看！
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