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)
33
Good
Branford, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.11 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.98 μg/m³
0
55
155
255
425
605+
27.47 ppb
0
55
71
86
201
201+
0.20 ppb
0
36
76
186
605
1005+
8.00 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Branford, Connecticut
Branford, Connecticut
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AQI 33
Good
5.82μg/m³
PM2.5
16.56μg/m³
PM10
26.32ppb
O3
0.50ppb
SO2
4.10ppb
NO2
0.21ppm
CO
AQI 33
Good
5.86μg/m³
PM2.5
15.19μg/m³
PM10
28.00ppb
O3
0.49ppb
SO2
4.18ppb
NO2
0.22ppm
CO
AQI 33
Good
5.67μg/m³
PM2.5
15.95μg/m³
PM10
24.14ppb
O3
0.52ppb
SO2
4.02ppb
NO2
0.24ppm
CO
AQI 38
Good
6.57μg/m³
PM2.5
15.81μg/m³
PM10
29.07ppb
O3
0.49ppb
SO2
4.13ppb
NO2
0.23ppm
CO
AQI 33
Good
5.76μg/m³
PM2.5
15.21μg/m³
PM10
24.76ppb
O3
0.52ppb
SO2
3.95ppb
NO2
0.24ppm
CO
AQI 33
Good
5.74μg/m³
PM2.5
15.94μg/m³
PM10
24.06ppb
O3
0.50ppb
SO2
4.25ppb
NO2
0.21ppm
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 06:00:00, 2026-08-14.
The best air quality in Branford, Connecticut was observed at 04:00:00 on 2026-08-14.
The air quality in Branford, Connecticut right now is Good, with an AQI of 33.
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 6.105 μg/m3.
Branford, Connecticut currently has a PM10 concentration of 12.977 μg/m3.
The current carbon monoxide (CO) level in Branford, Connecticut is 0.203 ppm.
The current sulfur dioxide (SO2) concentration in Branford, Connecticut is 0.203 ppb.
Branford, Connecticut currently has an ozone (O3) concentration of 27.474 ppm.
The current level of nitrogen dioxide (NO2) in Branford, Connecticut is 8.002 ppb.
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