Explore light pollution estimates, Bortle classes, and dark-sky locations on an interactive map.
CPRE's map presents information about light pollution and dark skies across England.
About CPRE
CPRE's map shows light pollution and dark skies across England. Users can search by postcode area, by district, or by National Character Area. Clicking a point on the map shows information about that area.
Each pixel shows the level of radiance from night lights shining up into the sky. These values are grouped into colour bands to show different light levels. The page refers to a report for more information on the data. Coverage is limited to England.
Key features
- Search by postcode area, district, or National Character Area
- Toggle boundary layers for districts and National Character Areas in the legend
- Click the map to view information about a selected area
- Night-light radiance shown as colour bands for each pixel
- Switch between OpenStreetMap and World Imagery base maps
- Zoom controls, current position, print, and fullscreen mode
Best for: People who want to check light pollution levels or dark sky conditions in specific parts of England.
Good for
- Lets users search by postcode area, district, or National Character Area
- Clicking the map gives details about a chosen area
- Colour bands make differences in night-light levels visible across the map
Watch out for
- Boundaries must be ticked in the legend before they appear on screen
CPRE at a glance
- Category
- Travel & Maps › Maps, Navigation & Weather
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
CPRE alternatives
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CPRE FAQ
How do I show district or National Character Area boundaries?
Tick the boundary you want to view in the legend. The boundary then appears on screen.
What do the colours on the map mean?
Each pixel shows the level of radiance from night lights shining up into the night sky. These levels are grouped into colour bands.
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