RainViewer's public API currently provides the Universal Blue palette only.
Animation
Frame Delay
600ms
Auto-Refresh
Update every 5 minutes
Loop Animation
Historical Replay
Replay IEM NEXRAD composites and storm-based warning polygons. Times use your browser timezone; ranges are limited to 6 hours.
Live mode
Audio Notifications
Alert Sounds
Opt in to a tone for newly issued matching alerts
The first alert load is always silent. Keep the map centered on the area you care about; alerts without polygons only match “Any distance.” Browsers may require Test Sound once per tab.
Saved Geofences
Add a private alert radius at the current map center. Geofences stay only in this browser profile.
OpenWeatherMap
Required for Temperature, Wind, Clouds, and Pressure layers
Keys are stored unencrypted in this browser profile and sent directly to their providers. Anyone with local browser access can read them. Settings exports always omit keys.
Radar & Freshness
App version
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Provider / product
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Result
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Valid time / age
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Coverage
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Resources
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Retry / backoff
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Redacted Request Results
Reports omit API keys, query strings, bookmarks, and precise coordinates.
