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)
22
Good
Branford, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.37 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
4.48 μg/m³
0
55
155
255
425
605+
23.82 ppb
0
55
71
86
201
201+
0.11 ppb
0
36
76
186
605
1005+
4.72 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Branford, Connecticut
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AQI 20
Good
2.32μg/m³
PM2.5
5.31μg/m³
PM10
22.32ppb
O3
0.20ppb
SO2
6.51ppb
NO2
0.10ppm
CO
AQI 20
Good
2.44μg/m³
PM2.5
5.16μg/m³
PM10
22.38ppb
O3
0.20ppb
SO2
5.92ppb
NO2
0.12ppm
CO
AQI 20
Good
2.31μg/m³
PM2.5
5.12μg/m³
PM10
22.13ppb
O3
0.20ppb
SO2
6.63ppb
NO2
0.10ppm
CO
AQI 22
Good
2.48μg/m³
PM2.5
7.98μg/m³
PM10
23.74ppb
O3
0.20ppb
SO2
5.86ppb
NO2
0.12ppm
CO
AQI 21
Good
2.34μg/m³
PM2.5
5.70μg/m³
PM10
22.86ppb
O3
0.20ppb
SO2
6.26ppb
NO2
0.11ppm
CO
AQI 21
Good
2.38μg/m³
PM2.5
6.02μg/m³
PM10
22.88ppb
O3
0.20ppb
SO2
6.08ppb
NO2
0.10ppm
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 04:00:00, 2026-02-11.
The best air quality in Branford, Connecticut was observed at 02:00:00 on 2026-02-12.
The air quality in Branford, Connecticut right now is Good, with an AQI of 23.
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 2.246 μg/m3.
Branford, Connecticut currently has a PM10 concentration of 5.532 μg/m3.
The current carbon monoxide (CO) level in Branford, Connecticut is 0.104 ppm.
The current sulfur dioxide (SO2) concentration in Branford, Connecticut is 0.109 ppb.
Branford, Connecticut currently has an ozone (O3) concentration of 25.238 ppm.
The current level of nitrogen dioxide (NO2) in Branford, Connecticut is 7.286 ppb.
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