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

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.37 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.06 μg/m³
0
55
155
255
425
605+
33.73 ppb
0
55
71
86
201
201+
0.67 ppb
0
36
76
186
605
1005+
15.02 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Manchester, New Hampshire
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AQI 32
Good
4.64μg/m³
PM2.5
18.52μg/m³
PM10
35.27ppb
O3
1.03ppb
SO2
17.88ppb
NO2
0.22ppm
CO
AQI 31
Good
5.05μg/m³
PM2.5
20.07μg/m³
PM10
34.24ppb
O3
0.68ppb
SO2
15.19ppb
NO2
0.21ppm
CO
AQI 35
Good
3.55μg/m³
PM2.5
10.24μg/m³
PM10
38.41ppb
O3
0.74ppb
SO2
19.90ppb
NO2
0.25ppm
CO
AQI 31
Good
4.88μg/m³
PM2.5
20.09μg/m³
PM10
33.64ppb
O3
0.63ppb
SO2
19.88ppb
NO2
0.21ppm
CO
AQI 34
Good
4.80μg/m³
PM2.5
20.44μg/m³
PM10
37.31ppb
O3
0.42ppb
SO2
9.27ppb
NO2
0.15ppm
CO
AQI 36
Good
3.96μg/m³
PM2.5
16.29μg/m³
PM10
38.58ppb
O3
0.33ppb
SO2
6.03ppb
NO2
0.11ppm
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 2025-12-28.
In the last 24 hours, the best air quality in Manchester, New Hampshire was observed at 11:00:00 on 2025-12-27.
As of now, the AQI in Manchester, New Hampshire is 31, indicating Good conditions.
Manchester, New Hampshire air has the highest levels of O3.
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 4.367 μg/m3.
The PM10 concentration in Manchester, New Hampshire is 17.062 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Manchester, New Hampshire is 0.212 ppm.
Currently, Manchester, New Hampshire has a sulfur dioxide (SO2) concentration of 0.668 ppb.
The current ozone (O3) level in Manchester, New Hampshire at the moment is 33.728 ppm.
Nitrogen dioxide (NO2) level in Manchester, New Hampshire at the moment is 15.019 ppb.
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