Air Quality in Merrimack, United States

Cloudy
12.5°C · 76.1% humidity
12.5°
Feels 12.5°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast
54 12am
54
54
26 3am
34
40
44 6am
20
20
21 9am
22
23
24 12pm
24
24
24 3pm
25
25
25 6pm
27
27
34 9pm
34
34
AD 728×90

Air Quality Index Trend

46h · 3 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▲
26
6.2 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Merrimack?

Temperature & Precipitation

PM2.5 Trend

46h · 3 stations
PM2.56.2 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
6.2
Median
6.2
Average
6.2
Low
6.2
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +3.5

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: 7.4°C

Where are air quality stations near Merrimack?

22
Londonderry - Moose Hill, New Hampshire, USA
9.2 km PM2.5: 5.3 µg/m³
30
Londonderry - Moose Hill, New Hampshire, USA
9.2 km PM2.5: 7.2 µg/m³

What cities are near Merrimack?

26 Nashua 26 Derry 26 Derry Village 23 Dracut 23 Methuen 23 Lowell 23 Chelmsford 28 Westford 23 North Andover 23 Tewksbury
Get AQI alerts for Merrimack

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T07:44 UTC.