Stay updated with real-time air quality in Plymouth, 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
Plymouth, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
11.57 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.79 μg/m³
0
55
155
255
425
605+
25.69 ppb
0
55
71
86
201
201+
0.17 ppb
0
36
76
186
605
1005+
10.99 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Plymouth, Connecticut
Plymouth, Connecticut
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AQI 54
Moderate
10.74μg/m³
PM2.5
23.52μg/m³
PM10
35.77ppb
O3
0.25ppb
SO2
12.95ppb
NO2
0.24ppm
CO
AQI 54
Moderate
11.23μg/m³
PM2.5
18.38μg/m³
PM10
36.52ppb
O3
0.32ppb
SO2
12.98ppb
NO2
0.23ppm
CO
AQI 56
Moderate
11.59μg/m³
PM2.5
20.11μg/m³
PM10
37.31ppb
O3
0.27ppb
SO2
13.29ppb
NO2
0.23ppm
CO
AQI 54
Moderate
10.91μg/m³
PM2.5
18.04μg/m³
PM10
36.92ppb
O3
0.28ppb
SO2
12.85ppb
NO2
0.23ppm
CO
AQI 52
Moderate
10.37μg/m³
PM2.5
18.94μg/m³
PM10
48.52ppb
O3
0.24ppb
SO2
10.76ppb
NO2
0.23ppm
CO
AQI 52
Moderate
10.36μg/m³
PM2.5
24.54μg/m³
PM10
32.04ppb
O3
0.25ppb
SO2
13.47ppb
NO2
0.25ppm
CO
The air quality data for Connecticut, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Plymouth, Connecticut are available every hour.
Plymouth, Connecticut experienced its worst air quality at 03:00:00, 2025-07-30.
The best air quality in Plymouth, Connecticut was observed at 04:00:00 on 2025-07-30.
The air quality in Plymouth, Connecticut right now is Moderate, with an AQI of 56.
In Plymouth, Connecticut, PM2.5 is the most frequently found pollutant.
When air quality in Plymouth, Connecticut is compromised, staying indoors and wearing a mask can reduce health risks.
Plymouth, Connecticut currently has a PM2.5 concentration of 11.847 μg/m3.
Plymouth, Connecticut currently has a PM10 concentration of 21.836 μg/m3.
The current carbon monoxide (CO) level in Plymouth, Connecticut is 0.235 ppm.
The current sulfur dioxide (SO2) concentration in Plymouth, Connecticut is 0.258 ppb.
Plymouth, Connecticut currently has an ozone (O3) concentration of 36.891 ppm.
The current level of nitrogen dioxide (NO2) in Plymouth, Connecticut is 14.768 ppb.
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