Stay updated with real-time air quality in North Branford, 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)
38
Good
North Branford, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.83 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.10 μg/m³
0
55
155
255
425
605+
32.27 ppb
0
55
71
86
201
201+
0.52 ppb
0
36
76
186
605
1005+
5.71 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
North Branford, Connecticut
North Branford, Connecticut
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AQI 33
Good
6.48μg/m³
PM2.5
17.55μg/m³
PM10
32.59ppb
O3
0.55ppb
SO2
6.24ppb
NO2
0.20ppm
CO
AQI 38
Good
6.82μg/m³
PM2.5
26.38μg/m³
PM10
34.03ppb
O3
0.52ppb
SO2
5.96ppb
NO2
0.20ppm
CO
AQI 33
Good
6.33μg/m³
PM2.5
13.91μg/m³
PM10
30.69ppb
O3
0.55ppb
SO2
5.95ppb
NO2
0.20ppm
CO
AQI 33
Good
6.49μg/m³
PM2.5
16.29μg/m³
PM10
31.23ppb
O3
0.55ppb
SO2
6.21ppb
NO2
0.20ppm
CO
AQI 38
Good
6.58μg/m³
PM2.5
15.78μg/m³
PM10
30.72ppb
O3
0.55ppb
SO2
6.39ppb
NO2
0.20ppm
CO
AQI 33
Good
6.25μg/m³
PM2.5
12.55μg/m³
PM10
30.21ppb
O3
0.55ppb
SO2
5.86ppb
NO2
0.20ppm
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 Branford, Connecticut is updated on an hourly basis.
The worst air quality in North Branford, Connecticut was recorded at 10:00:00 on 2026-08-12.
The best air quality in North Branford, Connecticut was recorded at 12:00:00 on 2026-08-13.
The real-time air quality index in North Branford, Connecticut is 33, currently categorized as Good.
The most common pollutant in North Branford, Connecticut is PM2.5.
If the air quality in North Branford, Connecticut is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in North Branford, Connecticut at present are 6.435 μg/m3.
The current PM10 levels in North Branford, Connecticut are 30.545 μg/m3.
The current carbon monoxide (CO) level in North Branford, Connecticut is 0.302 ppm.
The current sulfur dioxide (SO2) levels in North Branford, Connecticut are 0.22 ppb.
The current ozone (O3) levels at North Branford, Connecticut is 34.84 ppm.
The current nitrogen dioxide (NO2) levels at North Branford, Connecticut is 12.72 ppb.
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