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

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.70 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.02 μg/m³
0
55
155
255
425
605+
27.99 ppb
0
55
71
86
201
201+
0.18 ppb
0
36
76
186
605
1005+
5.20 ppb
0
54
101
361
1250
2050+
0.21 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 33
Good
6.29μg/m³
PM2.5
13.00μg/m³
PM10
27.98ppb
O3
0.33ppb
SO2
5.75ppb
NO2
0.23ppm
CO
AQI 33
Good
6.18μg/m³
PM2.5
13.07μg/m³
PM10
27.82ppb
O3
0.33ppb
SO2
5.64ppb
NO2
0.23ppm
CO
AQI 33
Good
5.84μg/m³
PM2.5
14.46μg/m³
PM10
28.70ppb
O3
0.33ppb
SO2
5.77ppb
NO2
0.22ppm
CO
AQI 27
Good
5.39μg/m³
PM2.5
12.11μg/m³
PM10
26.44ppb
O3
0.32ppb
SO2
5.49ppb
NO2
0.23ppm
CO
AQI 33
Good
5.93μg/m³
PM2.5
13.10μg/m³
PM10
27.37ppb
O3
0.33ppb
SO2
5.44ppb
NO2
0.22ppm
CO
AQI 27
Good
4.83μg/m³
PM2.5
16.53μg/m³
PM10
24.27ppb
O3
0.32ppb
SO2
5.70ppb
NO2
0.23ppm
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 11:00:00 on 2026-08-13.
The best air quality in New London, Connecticut was recorded at 04:00:00 on 2026-08-14.
The real-time air quality index in New London, Connecticut is 33, currently categorized as Good.
The most common pollutant in New London, Connecticut is PM2.5.
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 5.696 μg/m3.
The current PM10 levels in New London, Connecticut are 11.02 μg/m3.
The current carbon monoxide (CO) level in New London, Connecticut is 0.206 ppm.
The current sulfur dioxide (SO2) levels in New London, Connecticut are 0.179 ppb.
The current ozone (O3) levels at New London, Connecticut is 27.989 ppm.
The current nitrogen dioxide (NO2) levels at New London, Connecticut is 5.2 ppb.
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