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)
54
Moderate
Branford, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.32 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.04 μg/m³
0
55
155
255
425
605+
19.51 ppb
0
55
71
86
201
201+
0.20 ppb
0
36
76
186
605
1005+
23.48 ppb
0
54
101
361
1250
2050+
0.33 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Branford, Connecticut
Branford, Connecticut
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AQI 54
Moderate
11.17μg/m³
PM2.5
19.09μg/m³
PM10
19.23ppb
O3
0.20ppb
SO2
23.13ppb
NO2
0.31ppm
CO
AQI 62
Moderate
14.52μg/m³
PM2.5
59.40μg/m³
PM10
13.85ppb
O3
0.23ppb
SO2
21.58ppb
NO2
0.36ppm
CO
AQI 54
Moderate
11.11μg/m³
PM2.5
18.16μg/m³
PM10
19.05ppb
O3
0.20ppb
SO2
22.95ppb
NO2
0.30ppm
CO
AQI 60
Moderate
14.49μg/m³
PM2.5
59.37μg/m³
PM10
12.37ppb
O3
0.24ppb
SO2
22.01ppb
NO2
0.37ppm
CO
AQI 54
Moderate
11.25μg/m³
PM2.5
19.33μg/m³
PM10
19.02ppb
O3
0.20ppb
SO2
23.24ppb
NO2
0.32ppm
CO
AQI 54
Moderate
11.24μg/m³
PM2.5
21.19μg/m³
PM10
20.21ppb
O3
0.21ppb
SO2
24.07ppb
NO2
0.34ppm
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 05:00:00, 2025-12-28.
The best air quality in Branford, Connecticut was observed at 11:00:00 on 2025-12-27.
The air quality in Branford, Connecticut right now is Moderate, with an AQI of 54.
In Branford, Connecticut, PM2.5 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 11.322 μg/m3.
Branford, Connecticut currently has a PM10 concentration of 21.039 μg/m3.
The current carbon monoxide (CO) level in Branford, Connecticut is 0.328 ppm.
The current sulfur dioxide (SO2) concentration in Branford, Connecticut is 0.203 ppb.
Branford, Connecticut currently has an ozone (O3) concentration of 19.51 ppm.
The current level of nitrogen dioxide (NO2) in Branford, Connecticut is 23.483 ppb.
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