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Air Quality History for Ellicott City, United States

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

22
Current AQI
Good CAMS model
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

479h

PM2.5 Station

479h · 3 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-06-09 25 16–39 6.1 µg/m³ 15h 4
2026-06-08 29 20–42 7.1 µg/m³ 24h 4
2026-06-07 38 24–45 9.1 µg/m³ 24h 3
2026-06-06 51 41–77 12.7 µg/m³ 24h 4
2026-06-05 43 29–58 10.4 µg/m³ 24h 4
2026-06-04 36 28–50 8.8 µg/m³ 24h 4
2026-06-03 29 21–42 7.0 µg/m³ 24h 4
2026-06-02 28 16–38 6.7 µg/m³ 24h 4
2026-06-01 31 14–61 7.6 µg/m³ 24h 3
2026-05-31 24 15–32 5.9 µg/m³ 24h 4
2026-05-30 28 15–49 6.6 µg/m³ 24h 4
2026-05-29 26 15–42 6.2 µg/m³ 24h 3
2026-05-28 24 13–36 5.7 µg/m³ 24h 4
2026-05-27 28 19–40 6.8 µg/m³ 24h 4
2026-05-26 34 22–52 8.1 µg/m³ 24h 4
2026-05-25 34 23–52 8.2 µg/m³ 24h 4
2026-05-24 27 10–53 6.5 µg/m³ 24h 4
2026-05-23 18 13–26 4.4 µg/m³ 24h 4
2026-05-22 23 15–33 5.5 µg/m³ 24h 4
2026-05-21 25 12–33 6.0 µg/m³ 24h 4
2026-05-20 35 25–43 8.4 µg/m³ 8h 4
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