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Air Quality History for Merrimack, United States

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

26
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

479h

PM2.5 Station

479h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-06-09 32 23–53 7.6 µg/m³ 9h 3
2026-06-08 28 20–44 6.8 µg/m³ 24h 3
2026-06-07 40 22–60 9.8 µg/m³ 24h 3
2026-06-06 53 39–67 13.4 µg/m³ 24h 3
2026-06-05 41 28–54 9.8 µg/m³ 24h 3
2026-06-04 33 20–45 7.9 µg/m³ 24h 3
2026-06-03 29 19–49 7.0 µg/m³ 24h 3
2026-06-02 26 17–36 6.2 µg/m³ 24h 3
2026-06-01 27 15–34 6.6 µg/m³ 24h 4
2026-05-31 28 19–36 6.7 µg/m³ 24h 4
2026-05-30 28 10–53 6.6 µg/m³ 24h 3
2026-05-29 23 13–42 5.6 µg/m³ 24h 3
2026-05-28 27 19–46 6.6 µg/m³ 24h 4
2026-05-27 29 20–42 7.0 µg/m³ 24h 3
2026-05-26 26 18–39 6.2 µg/m³ 24h 4
2026-05-25 23 10–35 5.5 µg/m³ 24h 3
2026-05-24 26 16–44 6.3 µg/m³ 24h 3
2026-05-23 25 20–32 6.0 µg/m³ 24h 4
2026-05-22 22 14–31 5.2 µg/m³ 24h 3
2026-05-21 25 14–39 5.9 µg/m³ 24h 3
2026-05-20 35 14–57 8.7 µg/m³ 14h 3
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