Stay updated with real-time air quality in Manchester, Connecticut 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)
25
Good
Manchester, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.54 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
6.15 μg/m³
0
55
155
255
425
605+
26.67 ppb
0
55
71
86
201
201+
0.19 ppb
0
36
76
186
605
1005+
3.32 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Manchester, Connecticut
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AQI 22
Good
2.67μg/m³
PM2.5
6.59μg/m³
PM10
23.80ppb
O3
0.23ppb
SO2
3.16ppb
NO2
0.13ppm
CO
AQI 23
Good
2.79μg/m³
PM2.5
6.09μg/m³
PM10
24.67ppb
O3
0.22ppb
SO2
2.83ppb
NO2
0.11ppm
CO
AQI 23
Good
2.65μg/m³
PM2.5
6.28μg/m³
PM10
25.07ppb
O3
0.23ppb
SO2
2.93ppb
NO2
0.11ppm
CO
AQI 23
Good
2.68μg/m³
PM2.5
6.52μg/m³
PM10
24.78ppb
O3
0.22ppb
SO2
3.04ppb
NO2
0.11ppm
CO
AQI 21
Good
2.52μg/m³
PM2.5
6.01μg/m³
PM10
23.48ppb
O3
0.22ppb
SO2
3.74ppb
NO2
0.10ppm
CO
AQI 23
Good
2.71μg/m³
PM2.5
6.26μg/m³
PM10
24.65ppb
O3
0.22ppb
SO2
3.01ppb
NO2
0.11ppm
CO
Air quality data and pollutant measurements for Connecticut, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Manchester, Connecticut is updated every hour.
The worst air quality in Manchester, Connecticut in the last 24 hours was observed at 02:00:00 on 2026-02-11.
In the last 24 hrs, the best air quality in Manchester, Connecticut was observed at 02:00:00 on 2026-02-12.
The current air quality in Manchester, Connecticut is 25, categorized as Good based on real-time data.
The most common pollutant in Manchester, Connecticut is O3.
If the air quality in Manchester, Connecticut is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Manchester, Connecticut is 2.537 μg/m3.
The current PM10 concentration at Manchester, Connecticut is 6.154 μg/m3.
The current carbon monoxide (CO) concentration at Manchester, Connecticut is 0.123 ppm.
The current sulfur dioxide (SO2) concentration at Manchester, Connecticut is 0.194 ppb.
The current ozone (O3) concentration at Manchester, Connecticut is 26.668 ppm.
The current nitrogen dioxide (NO2) concentration at Manchester, Connecticut is 3.316 ppb.
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