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Pan or zoom the map — top 40 clean cells in view will appear here.
Top-100 no-flight zones worldwide. OpenSky-fed, hourly refresh.
USGS water quality, EPA AirNow, FCC carrier filings, OpenSky.
Full coverage. Mainland and islands ranked separately.
Most of Siberia has zero observed overhead traffic.
Japan / Korea / Taiwan measured utility data. China CEMC partial.
Brazil SISAGUA measured hardness. CAMS air quality.
CAMS air quality covers full continent. SA SANS + geology synth hardness.
Desert limestone aquifers. Among the lowest flight densities on Earth.
Australia BoM + state water authorities. NZ NZCRO.
Zero 5G, near-zero population, pristine air.
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