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)
38
Good
Plymouth, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.59 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.04 μg/m³
0
55
155
255
425
605+
26.15 ppb
0
55
71
86
201
201+
0.26 ppb
0
36
76
186
605
1005+
4.74 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Plymouth, Connecticut
Plymouth, Connecticut
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AQI 38
Good
6.61μg/m³
PM2.5
17.60μg/m³
PM10
25.61ppb
O3
0.25ppb
SO2
4.83ppb
NO2
0.19ppm
CO
AQI 33
Good
6.49μg/m³
PM2.5
15.28μg/m³
PM10
25.31ppb
O3
0.25ppb
SO2
5.30ppb
NO2
0.21ppm
CO
AQI 33
Good
6.46μg/m³
PM2.5
15.58μg/m³
PM10
25.16ppb
O3
0.24ppb
SO2
5.40ppb
NO2
0.21ppm
CO
AQI 33
Good
6.50μg/m³
PM2.5
15.99μg/m³
PM10
25.04ppb
O3
0.25ppb
SO2
5.16ppb
NO2
0.21ppm
CO
AQI 33
Good
6.26μg/m³
PM2.5
13.89μg/m³
PM10
26.01ppb
O3
0.27ppb
SO2
4.45ppb
NO2
0.19ppm
CO
AQI 38
Good
6.63μg/m³
PM2.5
17.92μg/m³
PM10
27.31ppb
O3
0.19ppb
SO2
4.84ppb
NO2
0.19ppm
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 07:00:00, 2026-08-14.
The best air quality in Plymouth, Connecticut was observed at 05:00:00 on 2026-08-14.
The air quality in Plymouth, Connecticut right now is Good, with an AQI of 38.
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 6.588 μg/m3.
Plymouth, Connecticut currently has a PM10 concentration of 15.039 μg/m3.
The current carbon monoxide (CO) level in Plymouth, Connecticut is 0.207 ppm.
The current sulfur dioxide (SO2) concentration in Plymouth, Connecticut is 0.257 ppb.
Plymouth, Connecticut currently has an ozone (O3) concentration of 26.149 ppm.
The current level of nitrogen dioxide (NO2) in Plymouth, Connecticut is 4.74 ppb.
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