Stay updated with real-time air quality in Norwich, 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)
56
Moderate
Norwich, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
12.03 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
40.17 μg/m³
0
55
155
255
425
605+
53.67 ppb
0
55
71
86
201
201+
0.48 ppb
0
36
76
186
605
1005+
2.32 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Norwich, Connecticut
Norwich, Connecticut
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AQI 56
Moderate
11.55μg/m³
PM2.5
23.23μg/m³
PM10
45.38ppb
O3
0.49ppb
SO2
8.79ppb
NO2
0.23ppm
CO
AQI 56
Moderate
11.53μg/m³
PM2.5
27.11μg/m³
PM10
43.55ppb
O3
0.49ppb
SO2
8.04ppb
NO2
0.23ppm
CO
AQI 56
Moderate
9.80μg/m³
PM2.5
65.33μg/m³
PM10
45.81ppb
O3
0.51ppb
SO2
3.28ppb
NO2
0.24ppm
CO
AQI 56
Moderate
11.50μg/m³
PM2.5
20.11μg/m³
PM10
44.05ppb
O3
0.49ppb
SO2
9.64ppb
NO2
0.22ppm
CO
AQI 56
Moderate
11.50μg/m³
PM2.5
20.11μg/m³
PM10
44.05ppb
O3
0.49ppb
SO2
9.64ppb
NO2
0.22ppm
CO
AQI 56
Moderate
11.53μg/m³
PM2.5
21.22μg/m³
PM10
44.63ppb
O3
0.49ppb
SO2
9.39ppb
NO2
0.23ppm
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 Norwich, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Norwich, Connecticut was at its worst at 07:00:00 on 2025-06-23.
In the last 24 hours, the best air quality in Norwich, Connecticut was observed at 03:00:00 on 2025-06-23.
As of now, the AQI in Norwich, Connecticut is 52, indicating Moderate conditions.
Norwich, Connecticut air has the highest levels of PM2.5.
Poor air quality in Norwich, Connecticut means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Norwich, Connecticut are currently 10.223 μg/m3.
The PM10 concentration in Norwich, Connecticut is 55.286 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Norwich, Connecticut is 0.225 ppm.
Currently, Norwich, Connecticut has a sulfur dioxide (SO2) concentration of 0.504 ppb.
The current ozone (O3) level in Norwich, Connecticut at the moment is 47.639 ppm.
Nitrogen dioxide (NO2) level in Norwich, Connecticut at the moment is 6.523 ppb.
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