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)
31
Good
Amherst, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.86 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
5.19 μg/m³
0
55
155
255
425
605+
33.94 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
19.89 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Amherst, New Hampshire
Amherst, New Hampshire
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AQI 37
Good
3.32μg/m³
PM2.5
8.28μg/m³
PM10
40.01ppb
O3
0.60ppb
SO2
10.02ppb
NO2
0.26ppm
CO
AQI 33
Good
4.74μg/m³
PM2.5
24.38μg/m³
PM10
35.94ppb
O3
0.60ppb
SO2
9.59ppb
NO2
0.25ppm
CO
AQI 33
Good
5.15μg/m³
PM2.5
33.93μg/m³
PM10
35.84ppb
O3
0.67ppb
SO2
9.48ppb
NO2
0.25ppm
CO
AQI 33
Good
4.78μg/m³
PM2.5
19.19μg/m³
PM10
36.09ppb
O3
0.47ppb
SO2
8.88ppb
NO2
0.25ppm
CO
AQI 37
Good
4.27μg/m³
PM2.5
14.83μg/m³
PM10
40.49ppb
O3
0.75ppb
SO2
10.08ppb
NO2
0.26ppm
CO
AQI 38
Good
6.80μg/m³
PM2.5
38.01μg/m³
PM10
35.17ppb
O3
0.47ppb
SO2
6.20ppb
NO2
0.24ppm
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 02:00:00 on 2025-12-28.
The best air quality in Amherst, New Hampshire was recorded at 11:00:00 on 2025-12-28.
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 4.665 μg/m3.
The current PM10 levels in Amherst, New Hampshire are 28.459 μg/m3.
The current carbon monoxide (CO) level in Amherst, New Hampshire is 0.257 ppm.
The current sulfur dioxide (SO2) levels in Amherst, New Hampshire are 0.627 ppb.
The current ozone (O3) levels at Amherst, New Hampshire is 40.155 ppm.
The current nitrogen dioxide (NO2) levels at Amherst, New Hampshire is 9.731 ppb.
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