Light Pollution Map

# 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 independently calculated by LightPollutionMap.app from NOAA VIIRS annual night-light data. Users can search for specific locations, view decimal Bortle values derived from modeled SQM, access SQM readings and all-sky skyglow views, and use 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 […truncated]