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)
54
Moderate
New London, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.88 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.11 μg/m³
0
55
155
255
425
605+
39.99 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
7.58 ppb
0
54
101
361
1250
2050+
0.19 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 54
Moderate
10.88μg/m³
PM2.5
16.11μg/m³
PM10
39.99ppb
O3
0.28ppb
SO2
7.58ppb
NO2
0.19ppm
CO
AQI 54
Moderate
10.72μg/m³
PM2.5
17.13μg/m³
PM10
39.94ppb
O3
0.28ppb
SO2
7.43ppb
NO2
0.19ppm
CO
AQI 52
Moderate
9.68μg/m³
PM2.5
42.55μg/m³
PM10
47.52ppb
O3
0.27ppb
SO2
7.24ppb
NO2
0.18ppm
CO
AQI 52
Moderate
10.28μg/m³
PM2.5
21.99μg/m³
PM10
38.48ppb
O3
0.29ppb
SO2
6.80ppb
NO2
0.18ppm
CO
AQI 52
Moderate
10.41μg/m³
PM2.5
19.28μg/m³
PM10
39.64ppb
O3
0.28ppb
SO2
7.09ppb
NO2
0.18ppm
CO
AQI 54
Moderate
11.41μg/m³
PM2.5
34.77μg/m³
PM10
46.14ppb
O3
0.22ppb
SO2
7.61ppb
NO2
0.20ppm
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 06:00:00 on 2026-06-29.
The best air quality in New London, Connecticut was recorded at 10:00:00 on 2026-06-29.
The real-time air quality index in New London, Connecticut is 54, currently categorized as Moderate.
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 10.883 μg/m3.
The current PM10 levels in New London, Connecticut are 16.108 μg/m3.
The current carbon monoxide (CO) level in New London, Connecticut is 0.187 ppm.
The current sulfur dioxide (SO2) levels in New London, Connecticut are 0.278 ppb.
The current ozone (O3) levels at New London, Connecticut is 39.987 ppm.
The current nitrogen dioxide (NO2) levels at New London, Connecticut is 7.579 ppb.
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