Light Pollution Map 2026 | Bortle Scale & Dark Sky
Explore 2026 light pollution estimates alongside the latest 2025 annual satellite layer. Check Bortle class, SQM, and dark-sky conditions for any location.
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llms.txt Content
# Light Pollution Map
> Light Pollution Map is an interactive web application maintained by the Stargazing Hub Team. It compares annual light-pollution layers, provisional 2026 estimates, clear-night climate, and other astronomy-planning context.
This website provides light pollution maps generated by LightPollutionMap.app from NOAA VIIRS annual night-light data, presented through an interactive map interface. Users can search for specific locations, view Bortle-based reference classes, access SQM readings and all-sky skyglow views, and use advanced tools for astrophotography planning including exposure time calculations and aurora forecasting.
## Core Information
- [Light Pollution Map Homepage](https://lightpollutionmap.app): The main application showing the interactive light pollution map with Bortle Scale data
- [About & Data](https://lightpollutionmap.app/about-data/): Maintainer, current data status, update policy, sources, limits, and citation guidance
- [Homepage Markdown](https://lightpollutionmap.app/index.md): AI-readable summary of the main application
- [Full AI Reference](https://lightpollutionmap.app/llms-full.txt): Expanded reference for features, data sources, use cases, and related apps
- [Structured Knowledge JSON](https://lightpollutionmap.app/knowledge/site.json): Programmatic site overview and canonical resource list
- [Global Light Pollution Rankings](https://lightpollutionmap.app/global-light-pollution-rankings/): Country and region rankings by SQM and artificial brightness data
- [Global Rankings Markdown](https://lightpollutionmap.app/global-light-pollution-rankings.md): AI-readable version of the rankings page
- [Clear Sky Map Guide](https://lightpollutionmap.app/clear-sky-map/): How to read annual and monthly clear-night climate bands, confidence, and limits
- [Clear Sky Map Markdown](https://lightpollutionmap.app/clear-sky-map.md): AI-readable version of the clear-sky guide
- [Best Months for Stargazing](https://lightpollutionmap.app