Light Pollution Map

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The map displays VIIRS/World Atlas/Clouds/Aurora/IAU observatories and the user SQM measurements.

The primary use is to show VIIRS/DMSP data in a friendly manner, but over time it also included some other interesting overlays that concern light pollution like SQM/SQC, World Atlas 2015 zenith brightness, clouds, aurora and IAU observatories. If you have a permanent SQM reader installed you can add it to the map by sending me an e-mail.

Please send comments and requests for new features via email (look under help)

Functionalities:
- VIIRS, Sky Brightness, World Atlas 2015, Cloud coverage and Aurora forecast layers
- VIIRS and Sky Brightness layers can be displayed in color blind friendly colors
- Road & Satellite base maps
- Cloud animation for the last 12 hours
- Get detail radiance and SQM values from layers at a click. For Sky brightness/World Atlas 2015, you also get Bortle class estimation.
- SQM, SQM-L, SQC, SQM-LE, SQM readings submitted by users
- International dark sky parks overlay
- Submit your own SQM (L) readings
- Observatories layer
- Save your favorite locations
- Distance measurement tool with azimuth angle report
- All-sky view on light pollution with real horizon
- Offline mode (Sky brightness map and a base map are saved to your device, so it will be displayed when you are offline)

Quoi de neuf dans la dernière version ?

- Added 2025 VIIRS and Sky brightness overlays.
- When area statistics are shown for Sky brightness/World Atlas, locations of the minimum and maximum values are now also marked on the map.
- Other minor fixes and improvements.