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)
20
Good
North Haven, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.76 μg/m³
0
55
155
255
425
605+
21.68 ppb
0
55
71
86
201
201+
0.23 ppb
0
36
76
186
605
1005+
20.53 ppb
0
54
101
361
1250
2050+
0.28 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 29
Good
2.64μg/m³
PM2.5
18.61μg/m³
PM10
30.74ppb
O3
0.17ppb
SO2
3.54ppb
NO2
0.19ppm
CO
AQI 32
Good
2.23μg/m³
PM2.5
19.50μg/m³
PM10
34.70ppb
O3
0.22ppb
SO2
2.94ppb
NO2
0.17ppm
CO
AQI 31
Good
2.39μg/m³
PM2.5
12.67μg/m³
PM10
32.55ppb
O3
0.19ppb
SO2
2.98ppb
NO2
0.18ppm
CO
AQI 28
Good
2.60μg/m³
PM2.5
15.19μg/m³
PM10
30.10ppb
O3
0.10ppb
SO2
3.86ppb
NO2
0.20ppm
CO
AQI 28
Good
2.60μg/m³
PM2.5
15.52μg/m³
PM10
30.33ppb
O3
0.12ppb
SO2
3.77ppb
NO2
0.20ppm
CO
AQI 29
Good
2.59μg/m³
PM2.5
16.13μg/m³
PM10
30.91ppb
O3
0.14ppb
SO2
3.54ppb
NO2
0.19ppm
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 10:00:00 on 2026-10-05.
The best air quality in North Haven, Connecticut was recorded at 03:00:00 on 2026-10-05.
The real-time air quality index in North Haven, Connecticut is 29, 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 2.629 μg/m3.
The current PM10 levels in North Haven, Connecticut are 17.431 μg/m3.
The current carbon monoxide (CO) level in North Haven, Connecticut is 0.193 ppm.
The current sulfur dioxide (SO2) levels in North Haven, Connecticut are 0.149 ppb.
The current ozone (O3) levels at North Haven, Connecticut is 30.811 ppm.
The current nitrogen dioxide (NO2) levels at North Haven, Connecticut is 3.624 ppb.
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