Air Quality Index Mapping
Definition
AQI mapping visualizes pollutant levels (PM2.5, NO₂, O₃) using data from ground sensors, satellites, or models. It assigns health risk categories (e.g., “Unhealthy”) to guide public advisories.
Application
Cities monitor compliance with WHO guidelines. Schools use AQI maps for outdoor activity planning. Epidemiologists study links between pollution and diseases.
FAQ
1. How is AQI calculated?
Each pollutant’s concentration is converted to a sub-index, with the highest value defining the overall AQI.
2. What satellites support AQI mapping?
Sentinel-5P’s Tropomi sensor provides global NO₂ and CO data.
3. Can AQI maps be real-time?
Yes, via IoT sensors (PurpleAir) and platforms like AirNow.
4. What are limitations?
Sparse sensor coverage in rural areas and model inaccuracies during wildfires.
SUPPORT
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