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
6.68 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.34 μg/m³
0
55
155
255
425
605+
34.36 ppb
0
55
71
86
201
201+
0.14 ppb
0
36
76
186
605
1005+
11.95 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
North Branford, Connecticut
North Branford, Connecticut
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AQI 27
Good
4.75μg/m³
PM2.5
14.19μg/m³
PM10
12.51ppb
O3
0.12ppb
SO2
5.21ppb
NO2
0.29ppm
CO
AQI 27
Good
4.78μg/m³
PM2.5
18.08μg/m³
PM10
19.58ppb
O3
0.13ppb
SO2
4.81ppb
NO2
0.27ppm
CO
AQI 27
Good
4.71μg/m³
PM2.5
13.27μg/m³
PM10
10.94ppb
O3
0.10ppb
SO2
5.38ppb
NO2
0.29ppm
CO
AQI 27
Good
4.72μg/m³
PM2.5
13.48μg/m³
PM10
12.59ppb
O3
0.11ppb
SO2
5.16ppb
NO2
0.29ppm
CO
AQI 27
Good
4.68μg/m³
PM2.5
12.98μg/m³
PM10
13.53ppb
O3
0.12ppb
SO2
5.07ppb
NO2
0.28ppm
CO
AQI 27
Good
4.70μg/m³
PM2.5
13.04μg/m³
PM10
10.38ppb
O3
0.10ppb
SO2
5.46ppb
NO2
0.30ppm
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 03:00:00 on 2025-09-11.
The best air quality in North Branford, Connecticut was recorded at 05:00:00 on 2025-09-10.
The real-time air quality index in North Branford, Connecticut is 27, 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 4.917 μg/m3.
The current PM10 levels in North Branford, Connecticut are 14.167 μg/m3.
The current carbon monoxide (CO) level in North Branford, Connecticut is 0.272 ppm.
The current sulfur dioxide (SO2) levels in North Branford, Connecticut are 0.124 ppb.
The current ozone (O3) levels at North Branford, Connecticut is 18.437 ppm.
The current nitrogen dioxide (NO2) levels at North Branford, Connecticut is 4.971 ppb.
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