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)
44
Good
Southbury, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
7.97 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
32.64 μg/m³
0
55
155
255
425
605+
40.02 ppb
0
55
71
86
201
201+
0.27 ppb
0
36
76
186
605
1005+
8.60 ppb
0
54
101
361
1250
2050+
0.31 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Southbury, Connecticut
Southbury, Connecticut
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AQI 44
Good
7.67μg/m³
PM2.5
21.10μg/m³
PM10
36.25ppb
O3
0.52ppb
SO2
8.66ppb
NO2
0.24ppm
CO
AQI 38
Good
6.99μg/m³
PM2.5
13.73μg/m³
PM10
35.68ppb
O3
0.51ppb
SO2
9.35ppb
NO2
0.24ppm
CO
AQI 33
Good
5.59μg/m³
PM2.5
11.75μg/m³
PM10
33.89ppb
O3
0.52ppb
SO2
12.69ppb
NO2
0.24ppm
CO
AQI 49
Good
8.87μg/m³
PM2.5
15.55μg/m³
PM10
36.16ppb
O3
0.57ppb
SO2
11.33ppb
NO2
0.25ppm
CO
AQI 44
Good
7.96μg/m³
PM2.5
20.17μg/m³
PM10
36.19ppb
O3
0.44ppb
SO2
8.54ppb
NO2
0.23ppm
CO
AQI 31
Good
5.11μg/m³
PM2.5
11.02μg/m³
PM10
33.22ppb
O3
0.54ppb
SO2
13.49ppb
NO2
0.24ppm
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 10:00:00 on 2025-07-09.
In the last 24 hours, the best air quality in Southbury, Connecticut was observed at 05:00:00 on 2025-07-09.
As of now, the AQI in Southbury, Connecticut is 44, indicating Good 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 7.861 μg/m3.
The PM10 concentration in Southbury, Connecticut is 21.309 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Southbury, Connecticut is 0.228 ppm.
Currently, Southbury, Connecticut has a sulfur dioxide (SO2) concentration of 0.68 ppb.
The current ozone (O3) level in Southbury, Connecticut at the moment is 27.045 ppm.
Nitrogen dioxide (NO2) level in Southbury, Connecticut at the moment is 9.98 ppb.
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