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)
27
Good
Amherst, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.15 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.93 μg/m³
0
55
155
255
425
605+
15.30 ppb
0
55
71
86
201
201+
0.73 ppb
0
36
76
186
605
1005+
4.01 ppb
0
54
101
361
1250
2050+
0.20 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 33
Good
5.79μg/m³
PM2.5
22.21μg/m³
PM10
15.68ppb
O3
0.95ppb
SO2
3.04ppb
NO2
0.22ppm
CO
AQI 33
Good
5.87μg/m³
PM2.5
20.06μg/m³
PM10
11.64ppb
O3
1.01ppb
SO2
2.89ppb
NO2
0.22ppm
CO
AQI 33
Good
6.22μg/m³
PM2.5
18.46μg/m³
PM10
13.84ppb
O3
1.01ppb
SO2
2.87ppb
NO2
0.22ppm
CO
AQI 33
Good
5.88μg/m³
PM2.5
15.89μg/m³
PM10
13.48ppb
O3
1.00ppb
SO2
2.97ppb
NO2
0.22ppm
CO
AQI 33
Good
5.82μg/m³
PM2.5
19.30μg/m³
PM10
15.23ppb
O3
0.98ppb
SO2
3.02ppb
NO2
0.22ppm
CO
AQI 33
Good
5.88μg/m³
PM2.5
16.22μg/m³
PM10
13.73ppb
O3
1.00ppb
SO2
3.03ppb
NO2
0.22ppm
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 08:00:00 on 2026-08-09.
The best air quality in Amherst, New Hampshire was recorded at 03:00:00 on 2026-08-10.
The real-time air quality index in Amherst, New Hampshire is 33, currently categorized as Good.
The most common pollutant in Amherst, New Hampshire is PM2.5.
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 6.445 μg/m3.
The current PM10 levels in Amherst, New Hampshire are 17.336 μg/m3.
The current carbon monoxide (CO) level in Amherst, New Hampshire is 0.222 ppm.
The current sulfur dioxide (SO2) levels in Amherst, New Hampshire are 0.983 ppb.
The current ozone (O3) levels at Amherst, New Hampshire is 18.468 ppm.
The current nitrogen dioxide (NO2) levels at Amherst, New Hampshire is 2.977 ppb.
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