Stay updated with real-time air quality in Waterbury, 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)
58
Moderate
Waterbury, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
13.00 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.00 μg/m³
0
55
155
255
425
605+
8.70 ppb
0
55
71
86
201
201+
0.34 ppb
0
36
76
186
605
1005+
26.20 ppb
0
54
101
361
1250
2050+
0.38 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Waterbury, Connecticut
Waterbury, Connecticut
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AQI 58
Moderate
13.22μg/m³
PM2.5
19.05μg/m³
PM10
9.59ppb
O3
0.34ppb
SO2
26.78ppb
NO2
0.38ppm
CO
AQI 58
Moderate
12.83μg/m³
PM2.5
16.72μg/m³
PM10
11.28ppb
O3
0.33ppb
SO2
26.16ppb
NO2
0.37ppm
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 69
Moderate
19.27μg/m³
PM2.5
83.19μg/m³
PM10
18.02ppb
O3
0.35ppb
SO2
27.05ppb
NO2
0.36ppm
CO
AQI 60
Moderate
14.02μg/m³
PM2.5
59.35μg/m³
PM10
12.34ppb
O3
0.36ppb
SO2
25.72ppb
NO2
0.35ppm
CO
AQI 60
Moderate
14.05μg/m³
PM2.5
60.82μg/m³
PM10
11.35ppb
O3
0.33ppb
SO2
25.98ppb
NO2
0.39ppm
CO
Air quality measurements for Connecticut, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Waterbury, Connecticut is updated on an hourly basis.
The worst air quality in Waterbury, Connecticut was recorded at 12:00:00 on 2025-12-29.
The best air quality in Waterbury, Connecticut was recorded at 02:00:00 on 2025-12-28.
The real-time air quality index in Waterbury, Connecticut is 58, currently categorized as Moderate.
The most common pollutant in Waterbury, Connecticut is PM2.5.
If the air quality in Waterbury, Connecticut is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Waterbury, Connecticut at present are 13.002 μg/m3.
The current PM10 levels in Waterbury, Connecticut are 17.002 μg/m3.
The current carbon monoxide (CO) level in Waterbury, Connecticut is 0.382 ppm.
The current sulfur dioxide (SO2) levels in Waterbury, Connecticut are 0.34 ppb.
The current ozone (O3) levels at Waterbury, Connecticut is 8.696 ppm.
The current nitrogen dioxide (NO2) levels at Waterbury, Connecticut is 26.203 ppb.
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