The [forecast.hours](https://developers.google.com/maps/documentation/weather/reference/rest/v1/forecast.hours/lookup.md.txt) endpoint returns up to 240 hours of forecast information for a specific location, starting at the current hour. The API returns the following: - A description of the current [weather conditions](https://developers.google.com/maps/documentation/weather/reference/rest/v1/WeatherCondition.md.txt#type) with a corresponding [icon](https://developers.google.com/maps/documentation/weather/weather-condition-icons.md.txt) - Current temperature - Apparent ("feels like") temperature - Dew point - Heat index - Wind chill - Wet bulb temperature - Relative humidity - UV index - Probability, percentage, and [type](https://developers.google.com/maps/documentation/weather/reference/rest/v1/Precipitation.md.txt#precipitationtype) of precipitation - Probability of thunderstorms - Sea level pressure - Wind [direction](https://developers.google.com/maps/documentation/weather/reference/rest/v1/Wind.md.txt#cardinaldirection), speed, and gust - Visibility and cloud cover The APIs Explorer lets you make live requests so that you can get familiar with the API and the API options: [Try it!](https://developers.google.com/maps/documentation/weather/hourly-forecast.md.txt#try_it) ## About hourly forecast requests To request hourly forecast information, send an HTTP GET request to: ```html https://weather.googleapis.com/v1/forecast/hours:lookup?key=YOUR_API_KEY&location.latitude=LATITUDE&location.longitude=LONGITUDE ``` Include the latitude and longitude coordinates of the location in your request URL [parameters](https://developers.google.com/maps/documentation/weather/reference/rest/v1/forecast.hours/lookup.md.txt#query-parameters). ## Hourly forecast request examples By default, the [forecast.hours](https://developers.google.com/maps/documentation/weather/reference/rest/v1/forecast.hours.md.txt) endpoint returns 240 hours of data, starting from the current hour. You can scope your request to a particular time period using the `hours` parameter. The following example requests hourly forecast information for the next three hours for Mountain View, CA: ``` curl -X GET "https://weather.googleapis.com/v1/forecast/hours:lookup?key=YOUR_API_KEY&location.latitude=37.4220&location.longitude=-122.0841&hours=3" ``` In the response, the `interval` object indicates each hour of information: ```json { "forecastHours": [ { "interval": { "startTime": "2025-02-05T23:00:00Z", "endTime": "2025-02-06T00:00:00Z" }, "displayDateTime": { "year": 2025, "month": 2, "day": 5, "hours": 15, "utcOffset": "-28800s" }, "isDaytime": true, "weatherCondition": { "iconBaseUri": "https://maps.gstatic.com/weather/v1/sunny", "description": { "text": "Sunny", "languageCode": "en" }, "type": "CLEAR" }, "temperature": { "degrees": 12.7, "unit": "CELSIUS" }, "feelsLikeTemperature": { "degrees": 12, "unit": "CELSIUS" }, "dewPoint": { "degrees": 2.7, "unit": "CELSIUS" }, "heatIndex": { "degrees": 12.7, "unit": "CELSIUS" }, "windChill": { "degrees": 12, "unit": "CELSIUS" }, "wetBulbTemperature": { "degrees": 7.7, "unit": "CELSIUS" }, "relativeHumidity": 51, "uvIndex": 1, "precipitation": { "probability": { "percent": 0, "type": "RAIN" }, "qpf": { "quantity": 0, "unit": "MILLIMETERS" } }, "thunderstormProbability": 0, "airPressure": { "meanSeaLevelMillibars": 1019.13 }, "wind": { "direction": { "degrees": 335, "cardinal": "NORTH_NORTHWEST" }, "speed": { "value": 10, "unit": "KILOMETERS_PER_HOUR" }, "gust": { "value": 19, "unit": "KILOMETERS_PER_HOUR" } }, "visibility": { "distance": 16, "unit": "KILOMETERS" }, "cloudCover": 0, "iceThickness": { "thickness": 0, "unit": "MILLIMETERS" } }, { "interval": { "startTime": "2025-02-06T00:00:00Z", "endTime": "2025-02-06T01:00:00Z" }, "displayDateTime": { "year": 2025, "month": 2, "day": 5, "hours": 16, "utcOffset": "-28800s" }, "isDaytime": true, "weatherCondition": { "iconBaseUri": "https://maps.gstatic.com/weather/v1/sunny", "description": { "text": "Sunny", "languageCode": "en" }, "type": "CLEAR" }, "temperature": { "degrees": 12.5, "unit": "CELSIUS" }, /.../ }, { "interval": { "startTime": "2025-02-06T01:00:00Z", "endTime": "2025-02-06T02:00:00Z" }, "displayDateTime": { "year": 2025, "month": 2, "day": 5, "hours": 17, "utcOffset": "-28800s" }, "isDaytime": true, "weatherCondition": { "iconBaseUri": "https://maps.gstatic.com/weather/v1/sunny", "description": { "text": "Sunny", "languageCode": "en" }, "type": "CLEAR" }, "temperature": { "degrees": 11.4, "unit": "CELSIUS" }, /.../ } ], "timeZone": { "id": "America/Los_Angeles" } } ``` ### Specify number of hours to return per page You can specify the number of hours of data to return per page using the `pageSize` URL parameter. The default value is 24 hours of forecast information per page. Responses with multiple pages of information include a `nextPageToken`. To view the next page of information, pass the `nextPageToken` value into the `pageToken` parameter in your request. > [!NOTE] > **Note:** Tokens are invalid if weather data is not available for at least one of the hours in the specified time period. Passing an invalid token into `pageToken` returns an error. The following example requests 25 hours of weather forecast data for Mountain View, CA, with three hours of data per page: ``` curl -X GET "https://weather.googleapis.com/v1/forecast/hours:lookup?key=YOUR_API_KEY&location.latitude=37.4220&location.longitude=-122.0841&hours=25&pageSize=3" ``` The response, which includes the first three hours of data, is in the form: ```json { "forecastHours": [ { "interval": { "startTime": "2025-02-06T23:00:00Z", "endTime": "2025-02-07T00:00:00Z" }, "displayDateTime": { "year": 2025, "month": 2, "day": 6, "hours": 15, "utcOffset": "-28800s" }, "isDaytime": true, "weatherCondition": { "iconBaseUri": "https://maps.gstatic.com/weather/v1/showers", "description": { "text": "Rain showers", "languageCode": "en" }, "type": "RAIN_SHOWERS" }, "temperature": { "degrees": 14.6, "unit": "CELSIUS" }, /.../ }, { "interval": { "startTime": "2025-02-07T00:00:00Z", "endTime": "2025-02-07T01:00:00Z" }, "displayDateTime": { "year": 2025, "month": 2, "day": 6, "hours": 16, "utcOffset": "-28800s" }, "isDaytime": true, "weatherCondition": { "iconBaseUri": "https://maps.gstatic.com/weather/v1/drizzle", "description": { "text": "Light rain", "languageCode": "en" }, "type": "LIGHT_RAIN" }, "temperature": { "degrees": 14.4, "unit": "CELSIUS" }, /.../ }, { "interval": { "startTime": "2025-02-07T01:00:00Z", "endTime": "2025-02-07T02:00:00Z" }, "displayDateTime": { "year": 2025, "month": 2, "day": 6, "hours": 17, "utcOffset": "-28800s" }, "isDaytime": true, "weatherCondition": { "iconBaseUri": "https://maps.gstatic.com/weather/v1/cloudy", "description": { "text": "Cloudy", "languageCode": "en" }, "type": "CLOUDY" }, "temperature": { "degrees": 14.4, "unit": "CELSIUS" }, /.../ } ], "timeZone": { "id": "America/Los_Angeles" }, "nextPageToken": "ChYKEgm8dJMYBLZCQBH-ZffkYYVewBAZEAMYAyIMCLKClb0GEJeO18kDKhNBbWVyaWNhL0xvc19BbmdlbGVz" } ``` To access the next page of data, pass the `nextPageToken` value into the `pageToken` parameter in your request: ``` curl -X GET "https://weather.googleapis.com/v1/forecast/hours:lookup?key=YOUR_API_KEY&location.latitude=37.4220&location.longitude=-122.0841&hours=25&pageSize=3&pageToken=ChYKEgm8dJMYBLZCQBH-ZffkYYVewBAZEAMYAyIMCLKClb0GEJeO18kDKhNBbWVyaWNhL0xvc19BbmdlbGVz" ``` The response is in the form: ```json { "forecastHours": [ { "interval": { "startTime": "2025-02-07T02:00:00Z", "endTime": "2025-02-07T03:00:00Z" }, "displayDateTime": { "year": 2025, "month": 2, "day": 6, "hours": 18, "utcOffset": "-28800s" }, "isDaytime": false, "weatherCondition": { "iconBaseUri": "https://maps.gstatic.com/weather/v1/cloudy", "description": { "text": "Cloudy", "languageCode": "en" }, "type": "CLOUDY" }, "temperature": { "degrees": 14.3, "unit": "CELSIUS" }, /.../ }, { "interval": { "startTime": "2025-02-07T03:00:00Z", "endTime": "2025-02-07T04:00:00Z" }, "displayDateTime": { "year": 2025, "month": 2, "day": 6, "hours": 19, "utcOffset": "-28800s" }, "isDaytime": false, "weatherCondition": { "iconBaseUri": "https://maps.gstatic.com/weather/v1/showers", "description": { "text": "Rain showers", "languageCode": "en" }, "type": "RAIN_SHOWERS" }, "temperature": { "degrees": 14.2, "unit": "CELSIUS" }, /.../ }, { "interval": { "startTime": "2025-02-07T04:00:00Z", "endTime": "2025-02-07T05:00:00Z" }, "displayDateTime": { "year": 2025, "month": 2, "day": 6, "hours": 20, "utcOffset": "-28800s" }, "isDaytime": false, "weatherCondition": { "iconBaseUri": "https://maps.gstatic.com/weather/v1/showers", "description": { "text": "Rain showers", "languageCode": "en" }, "type": "RAIN_SHOWERS" }, "temperature": { "degrees": 14.1, "unit": "CELSIUS" }, /.../ } ], "timeZone": { "id": "America/Los_Angeles" }, "nextPageToken": "ChYKEgm8dJMYBLZCQBH-ZffkYYVewBAZEAYYBiILCPeDlb0GEICs5TMqE0FtZXJpY2EvTG9zX0FuZ2VsZXM=" } ``` ## Try it! The APIs Explorer lets you make sample requests so that you can get familiar with the API and the API options. 1. Select the API icon api on the right side of the page. 2. Optionally edit the request parameters. 3. Select the **Execute** button. In the dialog, choose the account that you want to use to make the request. 4. In the APIs Explorer panel, select the fullscreen icon fullscreen to expand the APIs Explorer window.