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)
37
Good
Plymouth, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.96 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.56 μg/m³
0
55
155
255
425
605+
39.99 ppb
0
55
71
86
201
201+
0.20 ppb
0
36
76
186
605
1005+
6.32 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Plymouth, Connecticut
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AQI 35
Good
2.68μg/m³
PM2.5
9.48μg/m³
PM10
37.86ppb
O3
0.21ppb
SO2
6.01ppb
NO2
0.13ppm
CO
AQI 35
Good
2.46μg/m³
PM2.5
7.01μg/m³
PM10
38.34ppb
O3
0.20ppb
SO2
6.21ppb
NO2
0.13ppm
CO
AQI 35
Good
2.55μg/m³
PM2.5
7.45μg/m³
PM10
38.22ppb
O3
0.21ppb
SO2
6.11ppb
NO2
0.13ppm
CO
AQI 35
Good
2.60μg/m³
PM2.5
7.99μg/m³
PM10
37.96ppb
O3
0.21ppb
SO2
6.14ppb
NO2
0.13ppm
CO
AQI 38
Good
2.04μg/m³
PM2.5
10.95μg/m³
PM10
40.64ppb
O3
0.18ppb
SO2
6.64ppb
NO2
0.12ppm
CO
AQI 35
Good
2.48μg/m³
PM2.5
9.66μg/m³
PM10
38.38ppb
O3
0.22ppb
SO2
6.02ppb
NO2
0.14ppm
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 06:00:00, 2026-02-13.
The best air quality in Plymouth, Connecticut was observed at 08:00:00 on 2026-02-12.
The air quality in Plymouth, Connecticut right now is Good, with an AQI of 37.
In Plymouth, Connecticut, O3 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 2.956 μg/m3.
Plymouth, Connecticut currently has a PM10 concentration of 9.561 μg/m3.
The current carbon monoxide (CO) level in Plymouth, Connecticut is 0.129 ppm.
The current sulfur dioxide (SO2) concentration in Plymouth, Connecticut is 0.197 ppb.
Plymouth, Connecticut currently has an ozone (O3) concentration of 39.992 ppm.
The current level of nitrogen dioxide (NO2) in Plymouth, Connecticut is 6.322 ppb.
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