- 📚 Developer Reference · Weather Essentials API · Cloud Weather Services API
CustomWeather API
Documentation
CustomWeather offers 2 API options: Our Weather Essentials API and our Cloud Weather Services (CWS) API.

Please ensure that you are referencing the correct documentation for your API subscription.
Choose your API documentation
Select the documentation that matches your active subscription.

Weather Essentials API
Forecasts, Conditions & Map Tiles
The Weather Essentials API delivers real-time weather data, multi-day forecasts, severe alerts, marine data, and map tiles for any global location via a simple REST interface.
- REST API
- JSON / XML
- Global Coverage
INCLUDED ENDPOINTS
- Current Conditions
- Severe Weather Alerts
- Astronomy Data
- Airport Delays
- Hourly & Daily Forecasts
- Marine Forecasts
- Fire Danger
- Map Tiles

Cloud Weather Services API
Historical, Climate & Advanced Data
- CWS
The CWS API provides enterprise-grade historical climate data, MRMS, ERA5, lightning density, solar energy datasets, and high-resolution gridded forecasts for advanced analytics and ML workflows.
- REST / Stream
- JSON / netCDF
- Back to 1940
INCLUDED DATASETS
- Historical Climate Data
- High-Resolution Radar
- Solar & Wind Energy Data
- AI/ML-Ready Data Feeds
- ERA5 & MRMS Datasets
- Lightning Density Data
- Global Gridded Forecasts
- Real-Time Streaming

Important: Please ensure that you are referencing the correct documentation for your API subscription. Using the wrong documentation may result in incorrect endpoint calls.
Quick Links
Common starting points for developers integrating with the CustomWeather API.
Historical API
Global climate data for analysis, modeling, and decision-making
Weather Essentials API
Accurate and reliable weather data for your applications
Cloud Weather Services API
Real-time point access to large gridded datasets
Weather Maps API
Create engaging maps with accurate weather data
Weather Maptiles API
Meteorological layers from dozens of weather models
CustomWeather API FAQ
Explore the API Documentation
Can't find what you need?
Our developer support team is available to help you integrate the API into your application.