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
Air Quality Index Trend
47h · 1 stnMerrimack'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▲
6.85 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Merrimack?
Temperature & Precipitation
PM2.5 Trend
47h · 1 stationPM2.56.85 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
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?
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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.