Stay updated with real-time air quality in Southbury, 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)
60
Moderate
Southbury, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
13.80 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
42.03 μg/m³
0
55
155
255
425
605+
11.63 ppb
0
55
71
86
201
201+
0.31 ppb
0
36
76
186
605
1005+
26.66 ppb
0
54
101
361
1250
2050+
0.38 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Southbury, Connecticut
Southbury, Connecticut
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AQI 60
Moderate
14.05μg/m³
PM2.5
60.82μg/m³
PM10
11.35ppb
O3
0.33ppb
SO2
25.98ppb
NO2
0.39ppm
CO
AQI 60
Moderate
14.07μg/m³
PM2.5
62.44μg/m³
PM10
11.53ppb
O3
0.30ppb
SO2
26.41ppb
NO2
0.39ppm
CO
AQI 58
Moderate
13.18μg/m³
PM2.5
17.19μg/m³
PM10
9.47ppb
O3
0.34ppb
SO2
26.56ppb
NO2
0.38ppm
CO
AQI 60
Moderate
14.40μg/m³
PM2.5
20.72μg/m³
PM10
10.83ppb
O3
0.31ppb
SO2
25.56ppb
NO2
0.40ppm
CO
AQI 60
Moderate
14.01μg/m³
PM2.5
60.67μg/m³
PM10
11.72ppb
O3
0.35ppb
SO2
25.30ppb
NO2
0.40ppm
CO
AQI 58
Moderate
13.00μg/m³
PM2.5
17.00μg/m³
PM10
8.70ppb
O3
0.34ppb
SO2
26.20ppb
NO2
0.38ppm
CO
Air quality and pollutant data for Connecticut, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Southbury, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Southbury, Connecticut was at its worst at 12:00:00 on 2025-12-29.
In the last 24 hours, the best air quality in Southbury, Connecticut was observed at 04:00:00 on 2025-12-28.
As of now, the AQI in Southbury, Connecticut is 60, indicating Moderate conditions.
Southbury, Connecticut air has the highest levels of PM2.5.
Poor air quality in Southbury, Connecticut means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Southbury, Connecticut are currently 13.796 μg/m3.
The PM10 concentration in Southbury, Connecticut is 42.033 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Southbury, Connecticut is 0.379 ppm.
Currently, Southbury, Connecticut has a sulfur dioxide (SO2) concentration of 0.31 ppb.
The current ozone (O3) level in Southbury, Connecticut at the moment is 11.628 ppm.
Nitrogen dioxide (NO2) level in Southbury, Connecticut at the moment is 26.661 ppb.
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