Measurements and model estimates
A measurement belongs to a station and a time. A model estimate describes a calculated value for a location. These are labelled separately; your phone is not measuring outdoor pollution. The 48-hour forecast is available in the Atmiq app (Premium) and may change as new data arrives.
What the location pages show
Location pages use Sensor.Community station observations where available, with Open-Meteo model estimates as a fallback. Forecast pages use Open-Meteo. The interactive map may show additional providers. Check each row’s source and timestamp; a request time is not a measurement time.
Coverage and freshness
Availability differs across countries and neighbourhoods. Values older than two hours are marked, and missing timestamps remain unknown. A missing station or a failed request does not imply clean air. Model estimates describe an area rather than a measurement at every street.
US AQI is one index, not a universal scale
The concentration-derived US AQI displayed on these pages is not an official daily AQI or AirNow NowCast. National indices, CAQI and WHO guideline comparisons use different methods and averaging periods. Compare the pollutant, units, time and method before comparing colours.
Model data
Open-Meteo provides modelled pollution data based on Copernicus Atmosphere Monitoring Service (CAMS) forecasts. The fetched time indicates when Atmiq retrieved the data, not the model’s issuance time. Model estimates can change as new data arrives and should be checked against current observations before an outing.
Editorial information and app status
Atmiq’s editorial content cites public materials from WHO, EPA, AirNow, GIOŚ and other primary institutions. Sources and preparation dates appear on articles. The web map is available; iOS and Android apps are in development.