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)
54
Moderate
North Haven, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.24 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.19 μg/m³
0
55
155
255
425
605+
20.21 ppb
0
55
71
86
201
201+
0.21 ppb
0
36
76
186
605
1005+
24.07 ppb
0
54
101
361
1250
2050+
0.34 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 54
Moderate
11.11μg/m³
PM2.5
21.12μg/m³
PM10
20.88ppb
O3
0.21ppb
SO2
24.24ppb
NO2
0.35ppm
CO
AQI 52
Moderate
10.22μg/m³
PM2.5
34.36μg/m³
PM10
11.82ppb
O3
0.22ppb
SO2
19.47ppb
NO2
0.40ppm
CO
AQI 62
Moderate
14.52μg/m³
PM2.5
59.40μg/m³
PM10
13.85ppb
O3
0.23ppb
SO2
21.58ppb
NO2
0.36ppm
CO
AQI 54
Moderate
11.11μg/m³
PM2.5
18.16μg/m³
PM10
19.05ppb
O3
0.20ppb
SO2
22.95ppb
NO2
0.30ppm
CO
AQI 54
Moderate
11.17μg/m³
PM2.5
19.09μg/m³
PM10
19.23ppb
O3
0.20ppb
SO2
23.13ppb
NO2
0.31ppm
CO
AQI 54
Moderate
11.32μg/m³
PM2.5
21.04μg/m³
PM10
19.51ppb
O3
0.20ppb
SO2
23.48ppb
NO2
0.33ppm
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 05:00:00 on 2025-12-28.
The best air quality in North Haven, Connecticut was recorded at 11:00:00 on 2025-12-27.
The real-time air quality index in North Haven, Connecticut is 54, currently categorized as Moderate.
The most common pollutant in North Haven, Connecticut is PM2.5.
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 11.241 μg/m3.
The current PM10 levels in North Haven, Connecticut are 21.19 μg/m3.
The current carbon monoxide (CO) level in North Haven, Connecticut is 0.341 ppm.
The current sulfur dioxide (SO2) levels in North Haven, Connecticut are 0.206 ppb.
The current ozone (O3) levels at North Haven, Connecticut is 20.213 ppm.
The current nitrogen dioxide (NO2) levels at North Haven, Connecticut is 24.074 ppb.
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