AQI is calculated based on measurements of particle pollution (PM2.5 & PM10), ozone (smog), carbon monoxide, and nitrogen dioxide. Other pollutants may cause unhealthy air quality at times
AQI
300+
201 - 300
151 - 200
101 - 150
51 - 100
0 - 50
No Data
GridMap - Jurisdiction
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basemap layers
ArcGIS World Geocoding Service
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20mi
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The layer, World Topographic Map, cannot be added to the map.