Stay updated with real-time air quality in North Haven, 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)
22
Good
North Haven, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.24 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.40 μg/m³
0
55
155
255
425
605+
24.38 ppb
0
55
71
86
201
201+
0.53 ppb
0
36
76
186
605
1005+
5.75 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
North Haven, Connecticut
North Haven, Connecticut
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AQI 22
Good
4.24μg/m³
PM2.5
11.40μg/m³
PM10
24.38ppb
O3
0.53ppb
SO2
5.75ppb
NO2
0.29ppm
CO
AQI 22
Good
4.37μg/m³
PM2.5
9.81μg/m³
PM10
21.21ppb
O3
0.52ppb
SO2
5.92ppb
NO2
0.26ppm
CO
AQI 22
Good
4.32μg/m³
PM2.5
11.31μg/m³
PM10
24.32ppb
O3
0.52ppb
SO2
3.27ppb
NO2
0.25ppm
CO
AQI 23
Good
4.13μg/m³
PM2.5
11.24μg/m³
PM10
24.87ppb
O3
0.54ppb
SO2
4.04ppb
NO2
0.29ppm
CO
AQI 22
Good
4.12μg/m³
PM2.5
11.58μg/m³
PM10
24.30ppb
O3
0.53ppb
SO2
2.83ppb
NO2
0.29ppm
CO
AQI 22
Good
4.12μg/m³
PM2.5
11.58μg/m³
PM10
24.30ppb
O3
0.53ppb
SO2
2.83ppb
NO2
0.29ppm
CO
Air quality measurements for Connecticut, 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 North Haven, Connecticut is updated on an hourly basis.
The worst air quality in North Haven, Connecticut was recorded at 04:00:00 on 2026-11-12.
The best air quality in North Haven, Connecticut was recorded at 11:00:00 on 2026-11-12.
The real-time air quality index in North Haven, Connecticut is 22, currently categorized as Good.
The most common pollutant in North Haven, Connecticut is O3.
If the air quality in North Haven, Connecticut is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in North Haven, Connecticut at present are 4.235 μg/m3.
The current PM10 levels in North Haven, Connecticut are 11.405 μg/m3.
The current carbon monoxide (CO) level in North Haven, Connecticut is 0.286 ppm.
The current sulfur dioxide (SO2) levels in North Haven, Connecticut are 0.53 ppb.
The current ozone (O3) levels at North Haven, Connecticut is 24.378 ppm.
The current nitrogen dioxide (NO2) levels at North Haven, Connecticut is 5.755 ppb.
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