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)
29
Good
Manchester, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.50 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.72 μg/m³
0
55
155
255
425
605+
31.21 ppb
0
55
71
86
201
201+
0.77 ppb
0
36
76
186
605
1005+
2.79 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 28
Good
3.36μg/m³
PM2.5
15.30μg/m³
PM10
29.59ppb
O3
1.10ppb
SO2
3.59ppb
NO2
0.21ppm
CO
AQI 27
Good
2.07μg/m³
PM2.5
7.04μg/m³
PM10
28.63ppb
O3
0.68ppb
SO2
2.91ppb
NO2
0.21ppm
CO
AQI 27
Good
1.96μg/m³
PM2.5
4.31μg/m³
PM10
28.73ppb
O3
0.74ppb
SO2
3.05ppb
NO2
0.21ppm
CO
AQI 27
Good
1.95μg/m³
PM2.5
7.06μg/m³
PM10
28.89ppb
O3
0.58ppb
SO2
2.97ppb
NO2
0.21ppm
CO
AQI 28
Good
2.35μg/m³
PM2.5
5.37μg/m³
PM10
29.96ppb
O3
0.42ppb
SO2
1.54ppb
NO2
0.20ppm
CO
AQI 28
Good
2.30μg/m³
PM2.5
3.50μg/m³
PM10
29.98ppb
O3
0.32ppb
SO2
1.04ppb
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 02:00:00 on 2026-02-11.
In the last 24 hours, the best air quality in Manchester, New Hampshire was observed at 12:00:00 on 2026-02-12.
As of now, the AQI in Manchester, New Hampshire is 29, 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 2.499 μg/m3.
The PM10 concentration in Manchester, New Hampshire is 14.725 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Manchester, New Hampshire is 0.21 ppm.
Currently, Manchester, New Hampshire has a sulfur dioxide (SO2) concentration of 0.768 ppb.
The current ozone (O3) level in Manchester, New Hampshire at the moment is 31.209 ppm.
Nitrogen dioxide (NO2) level in Manchester, New Hampshire at the moment is 2.791 ppb.
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