Miller State Park, New Hampshire, USA Air Quality

Monitoring Station · Merrimack, United States
70
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
37 8pm
70
50
50 11pm
50
43
43 2am
41
40
40 5am
40
40
40 8am
40
—
— 11am
—
—
— 2pm
—
—
— 5pm
—
—
Station readings
37
70
CAMS model adj +16
34
34
34
34
34
27
27
25
24
24
24
24
24
24

Air Quality Forecast (24h)

PM2.521.1 µg/m³ ×1.4 WHO
Moderate
View city history →

Nearby Cities

48 Merrimack 48 Fitchburg 46 Gardner 54 Keene 48 Nashua 48 Leominster 47 Derry 47 Derry Village 37 Westford

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T23:13 UTC.