Stay updated with real-time air quality in New London, 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)
42
Good
New London, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.20 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.11 μg/m³
0
55
155
255
425
605+
45.00 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
5.83 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
New London, Connecticut
New London, Connecticut
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AQI 36
Good
6.00μg/m³
PM2.5
12.07μg/m³
PM10
39.01ppb
O3
0.25ppb
SO2
4.92ppb
NO2
0.31ppm
CO
AQI 36
Good
5.96μg/m³
PM2.5
12.79μg/m³
PM10
39.15ppb
O3
0.25ppb
SO2
4.89ppb
NO2
0.31ppm
CO
AQI 34
Good
6.28μg/m³
PM2.5
26.94μg/m³
PM10
36.88ppb
O3
0.21ppb
SO2
6.07ppb
NO2
0.30ppm
CO
AQI 36
Good
5.76μg/m³
PM2.5
14.42μg/m³
PM10
39.18ppb
O3
0.27ppb
SO2
4.41ppb
NO2
0.31ppm
CO
AQI 36
Good
5.89μg/m³
PM2.5
14.06μg/m³
PM10
39.33ppb
O3
0.26ppb
SO2
4.79ppb
NO2
0.30ppm
CO
AQI 37
Good
5.95μg/m³
PM2.5
15.39μg/m³
PM10
40.09ppb
O3
0.24ppb
SO2
4.63ppb
NO2
0.31ppm
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 New London, Connecticut is updated on an hourly basis.
The worst air quality in New London, Connecticut was recorded at 03:00:00 on 2026-08-08.
The best air quality in New London, Connecticut was recorded at 02:00:00 on 2026-08-08.
The real-time air quality index in New London, Connecticut is 36, currently categorized as Good.
The most common pollutant in New London, Connecticut is O3.
If the air quality in New London, Connecticut is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in New London, Connecticut at present are 5.995 μg/m3.
The current PM10 levels in New London, Connecticut are 12.07 μg/m3.
The current carbon monoxide (CO) level in New London, Connecticut is 0.306 ppm.
The current sulfur dioxide (SO2) levels in New London, Connecticut are 0.246 ppb.
The current ozone (O3) levels at New London, Connecticut is 39.013 ppm.
The current nitrogen dioxide (NO2) levels at New London, Connecticut is 4.916 ppb.
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