Stay updated with real-time air quality in East Lyme, 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)
43
Good
East Lyme, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.99 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.04 μg/m³
0
55
155
255
425
605+
46.31 ppb
0
55
71
86
201
201+
0.20 ppb
0
36
76
186
605
1005+
3.57 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
East Lyme, Connecticut
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AQI 43
Good
4.65μg/m³
PM2.5
9.39μg/m³
PM10
46.10ppb
O3
0.29ppb
SO2
3.13ppb
NO2
0.22ppm
CO
AQI 43
Good
4.69μg/m³
PM2.5
9.03μg/m³
PM10
46.01ppb
O3
0.30ppb
SO2
3.08ppb
NO2
0.22ppm
CO
AQI 43
Good
4.69μg/m³
PM2.5
9.03μg/m³
PM10
46.01ppb
O3
0.30ppb
SO2
3.08ppb
NO2
0.22ppm
CO
AQI 43
Good
4.54μg/m³
PM2.5
10.01μg/m³
PM10
46.21ppb
O3
0.28ppb
SO2
3.21ppb
NO2
0.22ppm
CO
AQI 44
Good
4.93μg/m³
PM2.5
16.86μg/m³
PM10
46.90ppb
O3
0.20ppb
SO2
2.51ppb
NO2
0.21ppm
CO
AQI 43
Good
4.27μg/m³
PM2.5
9.92μg/m³
PM10
46.08ppb
O3
0.29ppb
SO2
3.07ppb
NO2
0.22ppm
CO
Air quality measurements for Connecticut, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for East Lyme, Connecticut is updated on an hourly basis.
The worst air quality in East Lyme, Connecticut was recorded at 09:00:00 on 2026-03-29.
The best air quality in East Lyme, Connecticut was recorded at 02:00:00 on 2026-03-29.
The real-time air quality index in East Lyme, Connecticut is 43, currently categorized as Good.
The most common pollutant in East Lyme, Connecticut is O3.
If the air quality in East Lyme, Connecticut is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in East Lyme, Connecticut at present are 4.987 μg/m3.
The current PM10 levels in East Lyme, Connecticut are 11.038 μg/m3.
The current carbon monoxide (CO) level in East Lyme, Connecticut is 0.22 ppm.
The current sulfur dioxide (SO2) levels in East Lyme, Connecticut are 0.198 ppb.
The current ozone (O3) levels at East Lyme, Connecticut is 46.309 ppm.
The current nitrogen dioxide (NO2) levels at East Lyme, Connecticut is 3.571 ppb.
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