This article describes the major features added, and any change made, to the Timeline Weather API. None of the changes in this article break backwards compatibility. For full details of the Timeline Weather API, please see the API documentation.
2025
Q4
- Low Latency Endpoint – the new timelinellx endpoint provides ultra low latency responses for forecast queries. Perfect for apps, IoT and other embedding.
- Significantly updated Query Buillder to improve ease of use, expanded features
- New flatjson output format in the weather API to provide highly optimized dataset for improved performance.
- Improved ability to modify the list of weather elements retrieved in the weather API
Q3
- New AI-based Code generator to allow users to create working code to retrieve weather data in any programming language.
- Improved real-time weather dashboard to show additional mapping, radar-sourced precipitation.
- Improved city look up location geocoding.
Q2
- Expanded weather alert providers in Asia and South America.
- Expanded support for very large datasets of billions of rows.
Q1
- New APIs to allow programmatic modification, submission and data downloading of stored datasets.
- Ability to include different date and time ranges per locations in stored datasets.
- Additional historical data directly loaded from Meteo France for French locations.
2024
Q4
- Ability to include sub-hourly data in the Timeline Weather API with minute intervals.
Q3
- Ability to include radar precipitation data directly into the datasets to provide radar based precipitation amount and intensity estimates.
- Multiple location support in the Timeline Weather API moved from beta status to full support.
Q2
- Reimplementation of weather alerts for the United States, Canada and European continent to improve the speed of availability and improve geographical accuracy when the weather server provider includes geometry-based alerts.
- Air Quality data in the Timeline Weather API moved from beta status to full support.
Q1
- Expanded historical data for the Advanced solar elements and wind elements back to January 1st 2015.
- Expanded historical data for the Advanced agricultural elements back to January 1st 2015.
- Release of updated maritime wave and swell data with historical data back to January 1st 2015.
2023
Q4
- Beta release of updated maritime wave and swell data with historical data back to January 1st 2015.
- Multiple location support in the Timeline Weather API
Q2
- Release of new UV index forecast data.
Q1
- Release of new Air Quality data including both US AQI and European AQI
- Improvements to moon phase and other astronomical elements.
2022
Q4
- Expanded weather forecast model support including GDPS, ICON D2, HRRR sub hourly.
Q3
- Expanded bulk query download and schedule to improve performance and support new energy, agricultural and historical forecast queries.
Q2
- Release of agricultural and soil elements, degree days and evapotranspiration.
Q1
- Release of expanded solar energy elements including historical data from 2020 onwards. Elements include direct normal, diffuse normal, global horizontal and global tilt radiation
- Release of higher elevation wind elements at 50, 80 and 100 meters height.
- Increased weather forecast model resolution to 2km
2021
Q4
- Support for historical forecast – request weather forecasts that were created in the past.
- Degree Days in the Timeline Weather API – include growing degree days, heating degree days and cooling degree days in the API response.
Q3
- Support for requesting weather data by station ID
- Improvements to Time zone lookup
Q2
- Expanded weather description elements
- New icon keys and expanded sample icons
Q1
- Expansion to supported weather alerts
- Added and expanded weather elements including precipitation type and feels like.
2020
Q4
- Expand weather normals support in API.
- Full language support in API.
- Ability to contribute changes to languages.
Q3
- Full support for creating, editing and testing API queries in Query Builder
- Download and schedule multiple location Timeline API Queries.
Q2
- Release of Timeline Weather API that provides a single, seamless API for retrieving historical weather data and weather forecast data.
- Expansion of historical weather data and sub-hourly historical weather data sources.
- Release of initial usage documentation and sample code for Java, Python and other languages.
- Initial version of our Visual Crossing open source Github repository for icons, languages and sample code.