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Air Quality History for Katy, United States

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

25
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

337h

PM2.5 Station

337h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-06-09 28 26–33 6.8 µg/m³ 19.9 14h 35
2026-06-08 35 30–40 8.4 µg/m³ 30.3 24h 41
2026-06-07 35 25–43 8.4 µg/m³ 30.3 24h 41
2026-06-06 18 14–25 4.4 µg/m³ 14.0 24h 39
2026-06-05 24 17–55 5.8 µg/m³ 13.7 24h 41
2026-06-04 31 21–42 7.4 µg/m³ 16.3 24h 41
2026-06-03 26 20–34 6.2 µg/m³ 16.1 24h 40
2026-06-02 27 23–33 6.4 µg/m³ 20.7 24h 41
2026-06-01 28 23–34 6.8 µg/m³ 22.2 24h 37
2026-05-31 23 19–35 5.6 µg/m³ 12.9 24h 42
2026-05-30 33 24–40 7.9 µg/m³ 18.2 24h 41
2026-05-29 28 18–38 6.7 µg/m³ 16.9 24h 41
2026-05-28 36 24–58 8.8 µg/m³ 14.5 24h 38
2026-05-27 20 12–25 4.9 µg/m³ 11.1 24h 40
2026-05-26 22 19–25 5.1 µg/m³ 22.0 11h 37
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