Air Quality in Merrimack, United States

Cloudy
12.5°C · 76.1% humidity
12.5°
Feels 12.5°
28
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast
27 10pm
34
54
28 1am
35
41
44 4am
47
49
23 7am
22
23
24 10am
24
24
25 1pm
25
25
25 4pm
25
25
27 7pm
27
34
AD 728×90

Air Quality Index Trend

47h · 1 stn

Merrimack's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

76.1%
Humidity
8.1 km/h
Wind SW
999.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
28
6.85 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Merrimack?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.56.85 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (2 stations within 25 km)
6.85
Median
6.85
Average
6.5
Low
7.2
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +2.9

What is the 7-day forecast for Merrimack?

06-09
32.8° 12.5°
06-10
19.6° 11.1°
12.38 mm
06-11
25.3° 9.3°
06-12
19.9° 14.1°
3.31 mm
06-13
29.4° 15.2°
2.0 mm
06-14
25.4° 8.7°
17.87 mm
06-15
26.6° 13.3°
2.12 mm
Both models agree Avg diff: 7.7°C

Where are air quality stations near Merrimack?

32
Londonderry - Moose Hill, New Hampshire, USA
9.2 km PM2.5: 7.7 µg/m³
44
Londonderry - Moose Hill, New Hampshire, USA
9.2 km PM2.5: 10.6 µg/m³

What cities are near Merrimack?

28 Nashua 28 Derry 28 Derry Village 25 Dracut 23 Methuen 23 Lowell 23 Chelmsford 19 Westford 23 North Andover 23 Tewksbury
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T05:24 UTC.