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)
33
Good
Plymouth, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.91 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.23 μg/m³
0
55
155
255
425
605+
29.84 ppb
0
55
71
86
201
201+
0.35 ppb
0
36
76
186
605
1005+
13.62 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 33
Good
6.17μg/m³
PM2.5
13.59μg/m³
PM10
34.69ppb
O3
0.33ppb
SO2
11.13ppb
NO2
0.18ppm
CO
AQI 31
Good
5.35μg/m³
PM2.5
12.60μg/m³
PM10
33.45ppb
O3
0.37ppb
SO2
10.43ppb
NO2
0.18ppm
CO
AQI 31
Good
5.45μg/m³
PM2.5
13.39μg/m³
PM10
33.14ppb
O3
0.35ppb
SO2
10.87ppb
NO2
0.19ppm
CO
AQI 30
Good
5.40μg/m³
PM2.5
13.00μg/m³
PM10
31.58ppb
O3
0.36ppb
SO2
10.57ppb
NO2
0.19ppm
CO
AQI 35
Good
3.88μg/m³
PM2.5
7.58μg/m³
PM10
37.78ppb
O3
0.37ppb
SO2
10.85ppb
NO2
0.16ppm
CO
AQI 33
Good
5.88μg/m³
PM2.5
13.56μg/m³
PM10
34.88ppb
O3
0.24ppb
SO2
11.09ppb
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 10:00:00, 2026-05-13.
The best air quality in Plymouth, Connecticut was observed at 01:00:00 on 2026-05-13.
The air quality in Plymouth, Connecticut right now is Good, with an AQI of 33.
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 5.914 μg/m3.
Plymouth, Connecticut currently has a PM10 concentration of 13.228 μg/m3.
The current carbon monoxide (CO) level in Plymouth, Connecticut is 0.208 ppm.
The current sulfur dioxide (SO2) concentration in Plymouth, Connecticut is 0.354 ppb.
Plymouth, Connecticut currently has an ozone (O3) concentration of 29.841 ppm.
The current level of nitrogen dioxide (NO2) in Plymouth, Connecticut is 13.615 ppb.
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