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Air Quality History for Merrimack, United States

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

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

Air Quality Index Station

477h

PM2.5 Station

477h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-05-30 34 23–54 8.1 µg/m³ 7h 3
2026-05-29 26 15–53 6.3 µg/m³ 24h 3
2026-05-28 27 15–39 6.6 µg/m³ 24h 3
2026-05-27 32 18–52 7.7 µg/m³ 24h 3
2026-05-26 27 18–44 6.6 µg/m³ 24h 3
2026-05-25 24 15–44 5.8 µg/m³ 24h 3
2026-05-24 25 11–37 5.9 µg/m³ 24h 3
2026-05-23 25 15–34 6.0 µg/m³ 24h 3
2026-05-22 21 14–30 4.9 µg/m³ 23h 3
2026-05-21 20 12–34 4.9 µg/m³ 24h 3
2026-05-20 41 17–68 10.1 µg/m³ 24h 3
2026-05-19 47 26–64 11.5 µg/m³ 24h 3
2026-05-18 38 20–54 9.1 µg/m³ 24h 3
2026-05-17 39 20–51 9.3 µg/m³ 24h 3
2026-05-16 28 17–42 6.8 µg/m³ 24h 2
2026-05-15 23 11–54 5.5 µg/m³ 24h 2
2026-05-14 25 15–41 6.0 µg/m³ 24h 2
2026-05-13 31 21–39 7.4 µg/m³ 24h 3
2026-05-12 23 15–37 5.6 µg/m³ 24h 3
2026-05-11 27 12–52 6.4 µg/m³ 24h 2
2026-05-10 37 22–52 9.0 µg/m³ 15h 2
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