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)
58
Moderate
North Haven, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
12.83 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.81 μg/m³
0
55
155
255
425
605+
10.24 ppb
0
55
71
86
201
201+
0.50 ppb
0
36
76
186
605
1005+
28.10 ppb
0
54
101
361
1250
2050+
0.31 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
North Haven, Connecticut
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AQI 58
Moderate
12.99μg/m³
PM2.5
22.78μg/m³
PM10
10.60ppb
O3
0.51ppb
SO2
28.25ppb
NO2
0.31ppm
CO
AQI 49
Good
9.41μg/m³
PM2.5
33.82μg/m³
PM10
13.01ppb
O3
0.51ppb
SO2
26.52ppb
NO2
0.33ppm
CO
AQI 60
Moderate
13.53μg/m³
PM2.5
33.02μg/m³
PM10
8.74ppb
O3
0.41ppb
SO2
28.71ppb
NO2
0.32ppm
CO
AQI 60
Moderate
14.29μg/m³
PM2.5
20.24μg/m³
PM10
9.12ppb
O3
0.51ppb
SO2
28.52ppb
NO2
0.30ppm
CO
AQI 60
Moderate
13.85μg/m³
PM2.5
20.99μg/m³
PM10
9.45ppb
O3
0.51ppb
SO2
28.37ppb
NO2
0.30ppm
CO
AQI 58
Moderate
12.85μg/m³
PM2.5
22.96μg/m³
PM10
10.66ppb
O3
0.48ppb
SO2
27.14ppb
NO2
0.31ppm
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 02:00:00 on 2026-03-09.
The best air quality in North Haven, Connecticut was recorded at 01:00:00 on 2026-03-10.
The real-time air quality index in North Haven, Connecticut is 58, 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 12.829 μg/m3.
The current PM10 levels in North Haven, Connecticut are 22.812 μg/m3.
The current carbon monoxide (CO) level in North Haven, Connecticut is 0.308 ppm.
The current sulfur dioxide (SO2) levels in North Haven, Connecticut are 0.498 ppb.
The current ozone (O3) levels at North Haven, Connecticut is 10.243 ppm.
The current nitrogen dioxide (NO2) levels at North Haven, Connecticut is 28.104 ppb.
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