Information for high accuracy short-term precipitation is now provided by the Google nowcast. You can find short-term rain, hail, or snow forecasts in your desired location up to 12 hours in advance with the Google nowcast. On your mobile device, when you search weather data, the weather information box shows the Google nowcast. The start and end times that show are in the local time zone of the location you search for.
The Google nowcast availability:
- US
- Certain locations in Europe
- Japan
It may not be available on all weather surfaces.
The Google nowcast updates
The Google nowcast refreshes data multiple times per hour. We base the forecast on radar and weather prediction data from various data sources.
Learn more about the Google nowcast data sources:
- Deutscher Wetterdienst
- EUMETNET
- European Centre for Medium-range Weather Forecasts (ECMWF)
- National Oceanic and Atmospheric Administration (NOAA)
- Met Office
- Japan Meteorological Agency
To utilize the technology we developed in Japan, Google nowcast is provided by Weathernews. The technology leverages Google's AI analysis capabilities on Weathernews' high-precision data. The explanations about Japan here apply to other relevant sections below as well.
Weather forecasts aren't always accurate. To provide the highest level of accuracy, our predictions capture as much information as possible.
Should I expect additional precipitation?When you search for weather info on Google, you might be asked to provide feedback on the current weather in your location. Your feedback helps monitor the quality of weather results and update data.
To delete your feedback, go to My Activity. When you delete your feedback from your Google Account, we remove it. It may still be used to help improve weather results.
Air quality information
How an Air Quality Index (AQI) near you is selectedTo show the air quality at your location, Google applies the air quality model. Learn how to understand and manage your location.
If you search a city’s air quality, like “weather in London,” the result might be for a location far away from you. The air quality may be incorrect even if you're in the same city.
To get AQI for your location:
- On the location header, click Choose area.
- Select your precise location.
Learn more about air quality.
Air quality data sources
Google air quality model contains information available from the sources below:
Global data sources
- Low-cost sensor data from Purple Air.
- Modified Copernicus Atmosphere Monitoring Service information.
- Modified Copernicus Global Land Cover information.
- Public sector information licensed under the Open Government Licence v3.0 from Met Office.
- European EEA information under CC-BY-2.5 DK license.
Belgium
- Modified IRCEL - CELINE information. License.
Canada
- Information from the Manitoba government, licensed under the OpenMB Information and Data Use Licence Manitoba.ca/OpenMB.
- Information licensed under the Open Government Licence-Ontario, version 1.0.
Denmark
- DCE - National Center for Miljø og Energi. The data is raw data that isn't quality controlled.
Finland
France
- Pays de la Loire: Source of the data: Air Pays de la Loire.
- Geo D'Air.
Germany
- Contains modified German Environment Agency information. Changes were made.
Guernsey
- © Crown 2023 copyright Defra via uk-air.defra.gov.uk.
Italy
- Regione del Veneto. License.
Ireland
- Environmental Protection Agency (EPA): https://www.epa.ie/ https://airquality.ie/.
- License.
Japan
- Modified Soramame information.
Mexico
- The Air Quality information published by the Environment Secretariat of the Government of Mexico City is prepared from the information obtained from the Atmospheric Monitoring Network and its monitoring stations in the Metropolitan Zone of the Valley of Mexico, which are operated and managed by the Air Quality Monitoring Directorate of the General Directorate of Air Quality (SEDEMA). This information is public and free, and it's subject to quality processes that could modify it. The dissemination or use of this information by third parties is under the responsibility of the person who publishes or uses it.
- SINAICA, https://sinaica.inecc.gob.mx/. Changes were made.
Spain
- Metro Galicia and the Ministry of the Environment, Territory and Housing of the Xunta de Galicia.
- Madrid Comunidad.
- Ministry of the Environment information under CC BY 4.0 license.
Sweden
- Contains modified SMHI information.
UK
- © Crown 2023 copyright Defra via uk-air.defra.gov.uk.
- Contains LondonAir information. License.
- Northern Ireland Air.
US
- Texas TCEQ.
- New York State, Department of Environmental Conservation: The data displayed here are from http://www.nyaqinow.net. This data is preliminary and subject to change.