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)
20
Good
New London, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.30 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
3.02 μg/m³
0
55
155
255
425
605+
22.01 ppb
0
55
71
86
201
201+
0.48 ppb
0
36
76
186
605
1005+
5.58 ppb
0
54
101
361
1250
2050+
0.28 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 20
Good
1.30μg/m³
PM2.5
3.02μg/m³
PM10
22.01ppb
O3
0.48ppb
SO2
5.58ppb
NO2
0.28ppm
CO
AQI 20
Good
1.29μg/m³
PM2.5
3.15μg/m³
PM10
22.07ppb
O3
0.48ppb
SO2
5.57ppb
NO2
0.28ppm
CO
AQI 20
Good
1.33μg/m³
PM2.5
5.63μg/m³
PM10
21.91ppb
O3
0.49ppb
SO2
5.20ppb
NO2
0.29ppm
CO
AQI 20
Good
1.26μg/m³
PM2.5
3.70μg/m³
PM10
22.09ppb
O3
0.47ppb
SO2
5.64ppb
NO2
0.28ppm
CO
AQI 20
Good
1.27μg/m³
PM2.5
3.30μg/m³
PM10
22.13ppb
O3
0.48ppb
SO2
5.58ppb
NO2
0.28ppm
CO
AQI 20
Good
0.89μg/m³
PM2.5
2.02μg/m³
PM10
22.41ppb
O3
0.48ppb
SO2
5.81ppb
NO2
0.28ppm
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 2026-09-28.
The best air quality in New London, Connecticut was recorded at 09:00:00 on 2026-09-28.
The real-time air quality index in New London, Connecticut is 20, 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 1.299 μg/m3.
The current PM10 levels in New London, Connecticut are 3.018 μg/m3.
The current carbon monoxide (CO) level in New London, Connecticut is 0.285 ppm.
The current sulfur dioxide (SO2) levels in New London, Connecticut are 0.484 ppb.
The current ozone (O3) levels at New London, Connecticut is 22.007 ppm.
The current nitrogen dioxide (NO2) levels at New London, Connecticut is 5.585 ppb.
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