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Air Quality History for Chapel Hill, United States

Historical PM2.5 and AQI trend from monitoring stations near Chapel Hill, United States.

46
Current AQI
Good Station

Air Quality Index Station

142h

PM2.5 Station

142h · 5 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-07-21 46 23–76 11.5 µg/m³ 18h 3
2026-07-20 44 17–92 11.8 µg/m³ 18h 2
2026-07-19 43 19–83 11.5 µg/m³ 19h 3
2026-07-18 50 6–117 14.1 µg/m³ 21h 3
2026-07-17 87 21–199 39.8 µg/m³ 20h 2
2026-07-16 63 25–237 26.3 µg/m³ 22h 3
2026-07-15 43 15–76 10.7 µg/m³ 23h 2
2026-07-14 166 166–166 84.5 µg/m³ 1h 1
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