Change Log
May 2026 — Heat index and wind chill response parameters
- Added
HeatIndexto the Current Conditions response — perceived outdoor temperature in hot conditions (≥80 °F), computed via the NWS Rothfusz 9-term equation. - Added
HeatIndexandWindChillTemperatureto the Hourly Forecast response.
April 2026 — Lightning forecast endpoint
- Added lightning probability forecasts with a new endpoint in the Lightning API.
- Forecasts return 10-minute interval probabilities for a 2-hour window at any latitude/longitude.
- Review the Lightning Guide and Lightning Parameters for details.
- Try the Lightning Forecast recipe for a step-by-step walkthrough.
March 2026 — AccuWeather Alerts now available in API
- Developers can now access AccuWeather's proprietary alerts in a new API endpoint.
- Review the Alerts API Guide and Alerts Parameters.
January 2026 — Lightning API current and historical endpoints
- Added current and historical lightning strike endpoints to the Lightning API.
- Current endpoints return strikes by bounding box or point and radius.
- Historical endpoint returns daily strike data by point and radius.
August 2025 — Lightning API
- Introduced the Lightning API providing real-time lightning strike data.
- Powered by AccuWeather Lightning Network.
November 2024 — Climbing index added
- Added climbing index to the Indices API.
August 2024 — Reports API
- Introduced the Reports API for weather summary reports including local storm reports.
May 2024 — River Gauge API and new indices
- Introduced the River Gauge API providing river water level data and flood stage information.
- Added new indices to the Indices API: dry skin forecast, makeup and skincare forecast, clothes drying forecast, and car washing forecast.
May 2023 — New indices
- Added pest activity and brightness indices to the Indices API.
June 2022 — Historical API endpoints
- Added Historical API endpoints for archived weather observation data.
January 2022 — API removals
- Removed Local Weather API and Historical Weather API.
November 2021 — RealFeel® Phrase parameter
- Added "Phrase" response parameter to all RealFeel® Forecasts and Current Conditions endpoints.
- See RealFeel® Phrase Reference for the full list of phrases and temperature ranges.
July 2021 — New forecast response parameters
- Added
Evapotranspiration,SolarIrradiance,RealFeelTemperatureShade, andThunderstormProbabilityresponse parameters to hourly, daily, and quarter-day Forecasts API endpoints.
September 2020 — Historical weather endpoints
- Added Historical Weather endpoints.
June 2020 — Air Quality API version 2
- Launched Air Quality API version 2 with expanded international coverage and pollutant details.
November 2019 — Future Radar Maps
- Added Future Radar Maps endpoints for forecast radar overlay tiles.
June 2019 — Radar and Satellite Maps
- Added Radar Maps and Satellite Maps endpoints for weather map overlay tiles.
December 2018 — Current Conditions and Locations updates
- Added
HasPrecipitationandPrecipitationTyperesponse parameters to the Current Conditions API. - Added India postal codes to the Locations API.
October 2018 — Tropical API updates
- Updated Tropical API with new endpoints.
- Added links to status.accuweather.com.
July 2018 — Indices updates
- Added flying travel index to the Indices API.
- Updated index categories and levels for the flight delays index.
February 2018 — AccuWeather Go
- Added AccuWeather Go endpoints for route-based weather forecasts.
November 2017 — Quarter-day forecasts
- Added quarter-day forecast endpoints to the Forecasts API.
July 2017 — Quick start guides
- Added Quick Start Guides for easier developer implementation.
April 2017 — Deep Links, Locations updates
- Added Deep Links API for direct links to AccuWeather content.
- Added ParentCity object to Locations API response.
- Added ability to filter Autocomplete Locations searches by country.
- Added POI Search by Geoposition to Locations API.
- Added Translation endpoints to the Locations API.
January 2017 — Locations and Air Quality updates
- Added DataSets parameter to the Locations API.
- Added explanation of International Air Quality endpoints.
December 2016 — Alerts and language updates
- Added definitions for
lastActionparameter in Alerts response. See Alerts Action Reference. - Added Kannada, Marathi, Punjabi, and Telegu to the list of available languages.
October 2016 — Astronomy, Tidal Forecast, and Air Quality
- Added Astronomy API for sun and moon data.
- Added Tidal Forecast API for tide predictions.
- Updated International Air Quality to include Air Korea data access.
July 2016 — Alerts update
- Added "Update" as an Alert Last Action value.
January 2016 — Indices and MinuteCast™ updates
- Added metadata for indices 42-44.
- Added new parameters to MinuteCast™ Premium responses.
2015 — Languages, parameters, and search updates
- Added new language localizations including Gujarati, Tamil, Azerbaijani, and Uzbek.
- Added
LocalSourceparameter for Current Conditions and Daily Forecast responses. - Added additional response parameters for Air Quality queries.
- Added
toplevelquery parameter for Geoposition queries. - Added Time Zones menu item to Location API.
- Added Partner ID information to Locations API.
2014 — MinuteCast™, forecasts, and language expansion
- Added MinuteCast™ caching information to Best Practices and Forecasts pages.
- Added WetBulb Temperature as a Current Conditions parameter.
- Added HDD/CDD as Daily Forecast parameters.
- Added Past 24 hour Historical Current Conditions.
- Updated MinuteCast™ to include standard and premium options.
- Added 6 new languages: Bengali, Bosnian, Icelandic, Montenegrin, Swahili, and Urdu.
- Added a Locations change log.
- Added SourceId and fully translated Summary to Alerts API output.
- Updated Forecasts API to include 45 day forecasts and MinuteCast™.
- Added "IsDaylight" to Hourly Forecasts.
- Added 16:9(HD) aspect ratio for Current Conditions Photos.
- Added Current Conditions Top Cities documentation.
2013 — Core API expansion
- Added documentation for the Tropical API, Translations API, and Imagery API.
- Updated CurrentConditions API to include getPhotos.
- Added TopCityList and CityNeighbors to the Locations API.
- Added EndDate and Category to Forecast API headlines output.
- Added Category to the Alerts API output.
- Severe weather alert description and last action are now translated.
- Added basic code samples for locations and current conditions.
- Added Unit Types page and metric thresholds to Alarms homepage.
- Added CategoryValue as a response parameter to the Daily Forecasts and Indices APIs.
- Added hourly and daily forecast response parameters.
- Added indices metadata page.
- Added headline severity descriptions to the forecast parameters table.
- Added documentation for the Daily and Hourly Forecasts API.
2012 — Initial API launch
- Added documentation for the Locations API, Current Conditions API, Alerts API, Daily Indices API, Weather Alarms API, Climo API, and Legacy API.
- Added Weather Icons page.
- 12 new languages supported: Bulgarian, Croatian, Estonian, Filipino, Kazakh, Latvian, Lithuanian, Macedonian, Malaysian, Serbian, Thai, Vietnamese.
- Changed date format for all APIs from
yyyy-mm-ddThh:mm:ss+/-hhmmtoyyyy-mm-ddThh:mm:ss+/-hh:mm.
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