forecast 端点可为指定地点提供长达 96 小时（4 天）的每小时空气质量预报信息。每份预报都包含每小时的空气质量指数以及其他信息：
- 预测的具体时间和日期或时间段
- 已翻译字段的语言代码
- 当地或自定义空气质量指数 (AQI)
- 健康建议
- 主要污染物
- 污染物浓度
- 有关污染物的更多信息
- 响应页面大小
- 调色板
借助 API Explorer，您可以发出实时请求，以便熟悉 API 和 API 选项：
预测请求简介
您可以使用预报端点请求每小时空气质量预报信息，方法是向以下网址发送 HTTP POST 请求：
https://airquality.googleapis.com/v1/forecast:lookup?key=YOUR_API_KEY
在请求正文中添加参数。请求正文包含您想要获取空气质量每小时预报信息的地点，以及用于控制响应中包含哪些其他信息的各种选项。
预测响应简介
响应正文会提供用于显示空气质量预报信息、空气质量指数和其他自定义信息的世界协调时间 (UTC) 日期和时间。如果信息不符合请求的页面大小，响应正文还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测请求。在此示例中，您需要指定要显示每小时空气质量预报信息的位置、日期和时间（从次日开始，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"
该调用会生成以下 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。在此示例中，您需要指定以下内容：
- 位置
- 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"
该调用会生成以下 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测信息，请传入响应正文末尾返回的 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"
这会返回下一页的预测信息：
{
"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"
}