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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.

31
Current AQI
Good CAMS model
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

321h

PM2.5 Station

321h · 26 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 22–26 5.8 µg/m³ 2h 26
2026-07-21 53 27–76 14.7 µg/m³ 23h 26
2026-07-20 71 59–85 21.4 µg/m³ 22h 27
2026-07-19 62 36–90 18.3 µg/m³ 23h 27
2026-07-18 133 59–157 52.7 µg/m³ 23h 28
2026-07-17 168 60–229 101.3 µg/m³ 24h 28
2026-07-16 59 57–61 15.7 µg/m³ 23h 26
2026-07-15 51 45–59 12.7 µg/m³ 23h 28
2026-07-14 40 33–52 9.7 µg/m³ 24h 25
2026-07-13 37 31–45 9.0 µg/m³ 23h 26
2026-07-12 42 29–50 10.1 µg/m³ 22h 26
2026-07-11 45 15–52 10.7 µg/m³ 21h 22
2026-07-10 44 26–65 11.5 µg/m³ 24h 24
2026-07-09 35 25–41 8.3 µg/m³ 24h 25
2026-07-08 37 26–48 9.0 µg/m³ 20h 26
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