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
10.97 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.90 μg/m³
0
55
155
255
425
605+
23.70 ppb
0
55
71
86
201
201+
0.19 ppb
0
36
76
186
605
1005+
7.89 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Branford, Connecticut
Scroll To Air Quality MapLoading...
AQI 54
Moderate
10.97μg/m³
PM2.5
22.90μg/m³
PM10
23.70ppb
O3
0.19ppb
SO2
7.89ppb
NO2
0.19ppm
CO
AQI 49
Good
8.94μg/m³
PM2.5
35.51μg/m³
PM10
23.34ppb
O3
0.19ppb
SO2
8.36ppb
NO2
0.17ppm
CO
AQI 52
Moderate
10.13μg/m³
PM2.5
31.79μg/m³
PM10
24.55ppb
O3
0.19ppb
SO2
8.70ppb
NO2
0.21ppm
CO
AQI 52
Moderate
9.54μg/m³
PM2.5
26.71μg/m³
PM10
26.29ppb
O3
0.19ppb
SO2
7.93ppb
NO2
0.18ppm
CO
AQI 52
Moderate
10.05μg/m³
PM2.5
33.52μg/m³
PM10
24.50ppb
O3
0.19ppb
SO2
8.47ppb
NO2
0.21ppm
CO
AQI 54
Moderate
10.95μg/m³
PM2.5
23.28μg/m³
PM10
24.55ppb
O3
0.19ppb
SO2
8.98ppb
NO2
0.19ppm
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 08:00:00, 2026-03-07.
The best air quality in Branford, Connecticut was observed at 03:00:00 on 2026-03-07.
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 10.97 μg/m3.
Branford, Connecticut currently has a PM10 concentration of 22.901 μg/m3.
The current carbon monoxide (CO) level in Branford, Connecticut is 0.19 ppm.
The current sulfur dioxide (SO2) concentration in Branford, Connecticut is 0.193 ppb.
Branford, Connecticut currently has an ozone (O3) concentration of 23.698 ppm.
The current level of nitrogen dioxide (NO2) in Branford, Connecticut is 7.892 ppb.
All Rights Reserved © Ambee Inc. 2025