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)
23
Good
North Haven, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.27 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
5.67 μg/m³
0
55
155
255
425
605+
25.25 ppb
0
55
71
86
201
201+
0.11 ppb
0
36
76
186
605
1005+
7.09 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
North Haven, Connecticut
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AQI 21
Good
2.40μg/m³
PM2.5
6.52μg/m³
PM10
23.19ppb
O3
0.20ppb
SO2
5.88ppb
NO2
0.11ppm
CO
AQI 23
Good
2.63μg/m³
PM2.5
7.21μg/m³
PM10
25.22ppb
O3
0.20ppb
SO2
4.36ppb
NO2
0.12ppm
CO
AQI 20
Good
2.44μg/m³
PM2.5
5.16μg/m³
PM10
22.38ppb
O3
0.20ppb
SO2
5.92ppb
NO2
0.12ppm
CO
AQI 20
Good
2.31μg/m³
PM2.5
5.12μg/m³
PM10
22.13ppb
O3
0.20ppb
SO2
6.63ppb
NO2
0.10ppm
CO
AQI 20
Good
2.32μg/m³
PM2.5
5.31μg/m³
PM10
22.32ppb
O3
0.20ppb
SO2
6.51ppb
NO2
0.10ppm
CO
AQI 21
Good
2.34μg/m³
PM2.5
5.73μg/m³
PM10
22.78ppb
O3
0.20ppb
SO2
6.23ppb
NO2
0.10ppm
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 11:00:00 on 2026-02-11.
The best air quality in North Haven, Connecticut was recorded at 02:00:00 on 2026-02-12.
The real-time air quality index in North Haven, Connecticut is 23, 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 2.275 μg/m3.
The current PM10 levels in North Haven, Connecticut are 5.674 μg/m3.
The current carbon monoxide (CO) level in North Haven, Connecticut is 0.103 ppm.
The current sulfur dioxide (SO2) levels in North Haven, Connecticut are 0.113 ppb.
The current ozone (O3) levels at North Haven, Connecticut is 25.247 ppm.
The current nitrogen dioxide (NO2) levels at North Haven, Connecticut is 7.092 ppb.
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