Stay updated with real-time air quality in Nashua, 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)
33
Good
Nashua, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.98 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.26 μg/m³
0
55
155
255
425
605+
18.39 ppb
0
55
71
86
201
201+
0.42 ppb
0
36
76
186
605
1005+
13.29 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Nashua, New Hampshire
Nashua, New Hampshire
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AQI 38
Good
7.16μg/m³
PM2.5
29.02μg/m³
PM10
10.92ppb
O3
0.36ppb
SO2
17.43ppb
NO2
0.30ppm
CO
AQI 38
Good
7.25μg/m³
PM2.5
29.74μg/m³
PM10
5.28ppb
O3
0.66ppb
SO2
15.35ppb
NO2
0.38ppm
CO
AQI 38
Good
7.17μg/m³
PM2.5
26.88μg/m³
PM10
8.09ppb
O3
0.40ppb
SO2
14.95ppb
NO2
0.31ppm
CO
AQI 38
Good
6.92μg/m³
PM2.5
40.88μg/m³
PM10
10.50ppb
O3
0.45ppb
SO2
16.38ppb
NO2
0.34ppm
CO
AQI 33
Good
6.05μg/m³
PM2.5
12.40μg/m³
PM10
7.00ppb
O3
0.23ppb
SO2
17.22ppb
NO2
0.21ppm
CO
AQI 52
Moderate
9.74μg/m³
PM2.5
33.16μg/m³
PM10
8.21ppb
O3
0.49ppb
SO2
15.60ppb
NO2
0.39ppm
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 Nashua, New Hampshire is updated on an hourly basis.
The worst air quality in Nashua, New Hampshire was recorded at 04:00:00 on 2025-11-03.
The best air quality in Nashua, New Hampshire was recorded at 01:00:00 on 2025-11-03.
The real-time air quality index in Nashua, New Hampshire is 38, currently categorized as Good.
The most common pollutant in Nashua, New Hampshire is PM2.5.
If the air quality in Nashua, New Hampshire is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Nashua, New Hampshire at present are 6.89 μg/m3.
The current PM10 levels in Nashua, New Hampshire are 21.969 μg/m3.
The current carbon monoxide (CO) level in Nashua, New Hampshire is 0.301 ppm.
The current sulfur dioxide (SO2) levels in Nashua, New Hampshire are 0.447 ppb.
The current ozone (O3) levels at Nashua, New Hampshire is 7.443 ppm.
The current nitrogen dioxide (NO2) levels at Nashua, New Hampshire is 15.945 ppb.
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