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Air Quality History for Tri-Cities, United States

Historical PM2.5 and AQI trend from monitoring stations near Tri-Cities, United States.

38
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

475h

PM2.5 Station

475h · 4 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-10-21 40 36–47 9.6 µg/m³ 3h 4
2026-10-20 26 17–36 6.3 µg/m³ 24h 4
2026-10-19 27 10–56 6.6 µg/m³ 24h 4
2026-10-18 14 7–28 3.4 µg/m³ 24h 4
2026-10-17 36 17–53 8.6 µg/m³ 24h 4
2026-10-16 37 23–71 9.1 µg/m³ 19h 4
2026-10-15 26 13–41 6.3 µg/m³ 24h 4
2026-10-14 26 7–59 6.3 µg/m³ 24h 4
2026-10-13 19 6–55 4.7 µg/m³ 24h 4
2026-10-12 12 2–38 2.9 µg/m³ 24h 4
2026-10-11 29 6–103 8.0 µg/m³ 24h 4
2026-10-10 21 2–75 5.3 µg/m³ 24h 4
2026-10-09 47 28–100 12.8 µg/m³ 24h 4
2026-10-08 35 17–52 8.5 µg/m³ 24h 4
2026-10-07 27 14–41 6.5 µg/m³ 24h 4
2026-10-06 31 11–53 7.6 µg/m³ 24h 4
2026-10-05 28 14–40 6.7 µg/m³ 24h 4
2026-10-04 20 11–34 4.8 µg/m³ 24h 4
2026-10-03 25 14–34 5.9 µg/m³ 24h 4
2026-10-02 24 10–44 5.7 µg/m³ 24h 4
2026-10-01 17 7–26 4.2 µg/m³ 21h 4
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