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DEFRA Sensor Networks & Observatories

Air Quality & Pollution Observations

Compare active air-quality monitoring stations, Nitrogen Dioxide (NO₂), PM2.5/PM10 fine particulates, and Daily Air Quality Indices side-by-side.

Coordinate Search & Presets

Queries the Defra Sensor SOS database

Presets A:

Air Quality Stations

StationNO₂PM2.5PM10Daily Index

Pollution & Health

Air pollution measurements (Nitrogen Dioxide and PM2.5 particulates) are compiled directly from DEFRA monitoring networks.