Stay updated with real-time air quality in Amherst, New Hampshire featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
37
Good
Amherst, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.75 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.77 μg/m³
0
55
155
255
425
605+
40.47 ppb
0
55
71
86
201
201+
0.62 ppb
0
36
76
186
605
1005+
2.77 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Amherst, New Hampshire
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AQI 37
Good
2.05μg/m³
PM2.5
5.49μg/m³
PM10
40.46ppb
O3
0.60ppb
SO2
3.74ppb
NO2
0.20ppm
CO
AQI 37
Good
2.21μg/m³
PM2.5
7.84μg/m³
PM10
40.34ppb
O3
0.59ppb
SO2
2.87ppb
NO2
0.20ppm
CO
AQI 37
Good
2.49μg/m³
PM2.5
9.40μg/m³
PM10
40.36ppb
O3
0.67ppb
SO2
2.80ppb
NO2
0.20ppm
CO
AQI 36
Good
2.58μg/m³
PM2.5
9.29μg/m³
PM10
39.23ppb
O3
0.54ppb
SO2
2.41ppb
NO2
0.20ppm
CO
AQI 37
Good
2.62μg/m³
PM2.5
13.30μg/m³
PM10
40.18ppb
O3
0.72ppb
SO2
3.02ppb
NO2
0.20ppm
CO
AQI 36
Good
2.55μg/m³
PM2.5
6.43μg/m³
PM10
39.15ppb
O3
0.53ppb
SO2
2.27ppb
NO2
0.20ppm
CO
Air quality measurements for New Hampshire, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Amherst, New Hampshire is updated on an hourly basis.
The worst air quality in Amherst, New Hampshire was recorded at 03:00:00 on 2026-02-13.
The best air quality in Amherst, New Hampshire was recorded at 12:00:00 on 2026-02-12.
The real-time air quality index in Amherst, New Hampshire is 37, currently categorized as Good.
The most common pollutant in Amherst, New Hampshire is O3.
If the air quality in Amherst, New Hampshire is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Amherst, New Hampshire at present are 2.748 μg/m3.
The current PM10 levels in Amherst, New Hampshire are 9.77 μg/m3.
The current carbon monoxide (CO) level in Amherst, New Hampshire is 0.2 ppm.
The current sulfur dioxide (SO2) levels in Amherst, New Hampshire are 0.616 ppb.
The current ozone (O3) levels at Amherst, New Hampshire is 40.473 ppm.
The current nitrogen dioxide (NO2) levels at Amherst, New Hampshire is 2.767 ppb.
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