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Air Quality History for Hartford, United States

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

35
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

329h

PM2.5 Station

329h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-07-22 24 20–28 5.8 µg/m³ 2h 2
2026-07-21 34 18–74 8.6 µg/m³ 23h 2
2026-07-20 28 10–82 7.3 µg/m³ 24h 2
2026-07-19 46 20–98 12.8 µg/m³ 24h 2
2026-07-18 64 21–133 20.3 µg/m³ 24h 2
2026-07-17 56 20–136 16.7 µg/m³ 24h 2
2026-07-16 79 25–159 26.2 µg/m³ 23h 2
2026-07-15 55 23–128 15.2 µg/m³ 24h 2
2026-07-14 32 5–52 7.7 µg/m³ 24h 2
2026-07-13 31 14–48 7.3 µg/m³ 24h 2
2026-07-12 30 12–57 7.2 µg/m³ 24h 2
2026-07-11 34 18–54 8.2 µg/m³ 21h 2
2026-07-10 26 15–40 6.1 µg/m³ 24h 2
2026-07-09 28 16–38 6.8 µg/m³ 24h 2
2026-07-08 27 17–43 6.5 µg/m³ 20h 2
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