Stay updated with real-time air quality in 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)
39
Good
Branford, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.13 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.40 μg/m³
0
55
155
255
425
605+
41.76 ppb
0
55
71
86
201
201+
0.34 ppb
0
36
76
186
605
1005+
11.58 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Branford, Connecticut
Branford, Connecticut
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AQI 39
Good
5.64μg/m³
PM2.5
14.99μg/m³
PM10
42.07ppb
O3
0.37ppb
SO2
8.95ppb
NO2
0.20ppm
CO
AQI 35
Good
5.96μg/m³
PM2.5
13.92μg/m³
PM10
37.82ppb
O3
0.36ppb
SO2
10.20ppb
NO2
0.20ppm
CO
AQI 39
Good
5.63μg/m³
PM2.5
15.01μg/m³
PM10
41.99ppb
O3
0.38ppb
SO2
8.87ppb
NO2
0.20ppm
CO
AQI 36
Good
6.02μg/m³
PM2.5
13.93μg/m³
PM10
38.72ppb
O3
0.36ppb
SO2
10.34ppb
NO2
0.20ppm
CO
AQI 39
Good
5.86μg/m³
PM2.5
15.50μg/m³
PM10
41.90ppb
O3
0.39ppb
SO2
8.38ppb
NO2
0.20ppm
CO
AQI 39
Good
5.67μg/m³
PM2.5
14.95μg/m³
PM10
41.68ppb
O3
0.36ppb
SO2
9.16ppb
NO2
0.20ppm
CO
The air quality data for Connecticut, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Branford, Connecticut are available every hour.
Branford, Connecticut experienced its worst air quality at 10:00:00, 2026-05-13.
The best air quality in Branford, Connecticut was observed at 12:00:00 on 2026-05-13.
The air quality in Branford, Connecticut right now is Good, with an AQI of 39.
In Branford, Connecticut, O3 is the most frequently found pollutant.
When air quality in Branford, Connecticut is compromised, staying indoors and wearing a mask can reduce health risks.
Branford, Connecticut currently has a PM2.5 concentration of 6.129 μg/m3.
Branford, Connecticut currently has a PM10 concentration of 15.403 μg/m3.
The current carbon monoxide (CO) level in Branford, Connecticut is 0.211 ppm.
The current sulfur dioxide (SO2) concentration in Branford, Connecticut is 0.339 ppb.
Branford, Connecticut currently has an ozone (O3) concentration of 41.755 ppm.
The current level of nitrogen dioxide (NO2) in Branford, Connecticut is 11.58 ppb.
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