Stay updated with real-time air quality in Danbury, 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
Danbury, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
10.71 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.12 μg/m³
0
55
155
255
425
605+
15.03 ppb
0
55
71
86
201
201+
0.27 ppb
0
36
76
186
605
1005+
10.21 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Danbury, Connecticut
Danbury, Connecticut
Scroll To Air Quality MapLoading...
AQI 56
Moderate
12.33μg/m³
PM2.5
18.94μg/m³
PM10
41.75ppb
O3
0.33ppb
SO2
4.18ppb
NO2
0.29ppm
CO
AQI 56
Moderate
12.36μg/m³
PM2.5
22.17μg/m³
PM10
39.87ppb
O3
0.32ppb
SO2
4.15ppb
NO2
0.29ppm
CO
AQI 56
Moderate
12.18μg/m³
PM2.5
19.57μg/m³
PM10
41.16ppb
O3
0.33ppb
SO2
4.18ppb
NO2
0.29ppm
CO
AQI 56
Moderate
12.35μg/m³
PM2.5
34.74μg/m³
PM10
38.63ppb
O3
0.35ppb
SO2
4.68ppb
NO2
0.28ppm
CO
AQI 54
Moderate
11.12μg/m³
PM2.5
40.08μg/m³
PM10
35.33ppb
O3
0.34ppb
SO2
3.90ppb
NO2
0.30ppm
CO
AQI 54
Moderate
11.36μg/m³
PM2.5
38.63μg/m³
PM10
30.98ppb
O3
0.32ppb
SO2
3.84ppb
NO2
0.30ppm
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 Danbury, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Danbury, Connecticut was at its worst at 05:00:00 on 2025-07-28.
In the last 24 hours, the best air quality in Danbury, Connecticut was observed at 09:00:00 on 2025-07-28.
As of now, the AQI in Danbury, Connecticut is 62, indicating Moderate conditions.
Danbury, Connecticut air has the highest levels of PM2.5.
Poor air quality in Danbury, Connecticut means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Danbury, Connecticut are currently 14.692 μg/m3.
The PM10 concentration in Danbury, Connecticut is 20.105 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Danbury, Connecticut is 0.294 ppm.
Currently, Danbury, Connecticut has a sulfur dioxide (SO2) concentration of 0.426 ppb.
The current ozone (O3) level in Danbury, Connecticut at the moment is 32.996 ppm.
Nitrogen dioxide (NO2) level in Danbury, Connecticut at the moment is 13.069 ppb.
All Rights Reserved © Ambee Inc. 2025