AirNow: Official US air quality index and forecasts. Dark Site Finder: Find a dark place to see the stars near you.
| AirNow | Dark Site Finder | |
|---|---|---|
| Category | Environment & Wildlife Maps | Environment & Wildlife Maps |
| Coverage | United States | Worldwide, sites mainly in North America |
| Updates | Live / real time | Static archive |
| Data source | EPA and state monitoring networks | Satellite night light data |
| Made by | US Environmental Protection Agency | Dark Site Finder |
| Price | Free | Free |
| Account | No account needed | No account needed |
| On phones | Works well on phones | Works well on phones |
| Map view | Flat map | Flat map |
| Visits from ColorfulMaps | 0 | 0 |
| Open map | Open map |
What you can do with AirNow
- Current air quality across the US
- Forecasts
- Health guidance
What you can do with Dark Site Finder
- Light pollution overlay
- Recommended dark sites
- Simple and fast
Summary based on public information. Check each map's website for current features and prices.