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

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.10 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.17 μg/m³
0
55
155
255
425
605+
18.75 ppb
0
55
71
86
201
201+
0.47 ppb
0
36
76
186
605
1005+
13.07 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Manchester, New Hampshire
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AQI 27
Good
5.30μg/m³
PM2.5
21.24μg/m³
PM10
24.39ppb
O3
0.55ppb
SO2
12.38ppb
NO2
0.24ppm
CO
AQI 27
Good
5.00μg/m³
PM2.5
22.69μg/m³
PM10
22.86ppb
O3
0.43ppb
SO2
10.92ppb
NO2
0.24ppm
CO
AQI 27
Good
4.11μg/m³
PM2.5
12.36μg/m³
PM10
28.84ppb
O3
0.48ppb
SO2
12.78ppb
NO2
0.24ppm
CO
AQI 27
Good
4.98μg/m³
PM2.5
22.70μg/m³
PM10
23.43ppb
O3
0.40ppb
SO2
7.47ppb
NO2
0.24ppm
CO
AQI 33
Good
5.56μg/m³
PM2.5
15.67μg/m³
PM10
29.18ppb
O3
0.34ppb
SO2
8.98ppb
NO2
0.22ppm
CO
AQI 31
Good
5.27μg/m³
PM2.5
12.08μg/m³
PM10
33.55ppb
O3
0.31ppb
SO2
5.44ppb
NO2
0.20ppm
CO
Air quality and pollutant data for New Hampshire, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Manchester, New Hampshire is updated every hour for accuracy.
In the past 24 hours, the air quality in Manchester, New Hampshire was at its worst at 03:00:00 on 2026-03-10.
In the last 24 hours, the best air quality in Manchester, New Hampshire was observed at 02:00:00 on 2026-03-09.
As of now, the AQI in Manchester, New Hampshire is 27, indicating Good conditions.
Manchester, New Hampshire air has the highest levels of PM2.5.
Poor air quality in Manchester, New Hampshire means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Manchester, New Hampshire are currently 5.096 μg/m3.
The PM10 concentration in Manchester, New Hampshire is 10.168 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Manchester, New Hampshire is 0.288 ppm.
Currently, Manchester, New Hampshire has a sulfur dioxide (SO2) concentration of 0.475 ppb.
The current ozone (O3) level in Manchester, New Hampshire at the moment is 18.753 ppm.
Nitrogen dioxide (NO2) level in Manchester, New Hampshire at the moment is 13.072 ppb.
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