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)
64
Moderate
Norwich, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
15.60 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
43.38 μg/m³
0
55
155
255
425
605+
54.67 ppb
0
55
71
86
201
201+
0.56 ppb
0
36
76
186
605
1005+
4.60 ppb
0
54
101
361
1250
2050+
0.31 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Norwich, Connecticut
Norwich, Connecticut
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AQI 77
Moderate
15.15μg/m³
PM2.5
30.77μg/m³
PM10
62.58ppb
O3
0.42ppb
SO2
7.23ppb
NO2
0.30ppm
CO
AQI 67
Moderate
14.85μg/m³
PM2.5
34.84μg/m³
PM10
60.25ppb
O3
0.44ppb
SO2
6.64ppb
NO2
0.30ppm
CO
AQI 60
Moderate
14.35μg/m³
PM2.5
53.71μg/m³
PM10
56.09ppb
O3
0.57ppb
SO2
4.06ppb
NO2
0.31ppm
CO
AQI 74
Moderate
14.23μg/m³
PM2.5
24.24μg/m³
PM10
62.02ppb
O3
0.42ppb
SO2
7.48ppb
NO2
0.30ppm
CO
AQI 74
Moderate
14.23μg/m³
PM2.5
24.24μg/m³
PM10
62.02ppb
O3
0.42ppb
SO2
7.48ppb
NO2
0.30ppm
CO
AQI 74
Moderate
14.55μg/m³
PM2.5
26.36μg/m³
PM10
62.23ppb
O3
0.42ppb
SO2
7.42ppb
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 Norwich, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Norwich, Connecticut was at its worst at 10:00:00 on 2025-06-05.
In the last 24 hours, the best air quality in Norwich, Connecticut was observed at 11:00:00 on 2025-06-06.
As of now, the AQI in Norwich, Connecticut is 64, 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 15.596 μg/m3.
The PM10 concentration in Norwich, Connecticut is 43.379 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Norwich, Connecticut is 0.307 ppm.
Currently, Norwich, Connecticut has a sulfur dioxide (SO2) concentration of 0.558 ppb.
The current ozone (O3) level in Norwich, Connecticut at the moment is 54.668 ppm.
Nitrogen dioxide (NO2) level in Norwich, Connecticut at the moment is 4.604 ppb.
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