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)
49
Good
New London, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
8.63 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.30 μg/m³
0
55
155
255
425
605+
52.02 ppb
0
55
71
86
201
201+
0.70 ppb
0
36
76
186
605
1005+
6.73 ppb
0
54
101
361
1250
2050+
0.35 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 49
Good
8.63μg/m³
PM2.5
16.30μg/m³
PM10
52.02ppb
O3
0.70ppb
SO2
6.73ppb
NO2
0.35ppm
CO
AQI 49
Good
8.97μg/m³
PM2.5
19.17μg/m³
PM10
52.34ppb
O3
0.70ppb
SO2
7.12ppb
NO2
0.35ppm
CO
AQI 67
Moderate
16.07μg/m³
PM2.5
65.33μg/m³
PM10
60.30ppb
O3
0.56ppb
SO2
14.53ppb
NO2
0.34ppm
CO
AQI 52
Moderate
9.53μg/m³
PM2.5
25.44μg/m³
PM10
50.09ppb
O3
0.73ppb
SO2
6.91ppb
NO2
0.36ppm
CO
AQI 52
Moderate
9.67μg/m³
PM2.5
25.09μg/m³
PM10
53.03ppb
O3
0.69ppb
SO2
7.69ppb
NO2
0.35ppm
CO
AQI 62
Moderate
14.89μg/m³
PM2.5
48.98μg/m³
PM10
49.28ppb
O3
0.64ppb
SO2
6.95ppb
NO2
0.36ppm
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 12:00:00 on 2025-06-06.
The best air quality in New London, Connecticut was recorded at 11:00:00 on 2025-06-06.
The real-time air quality index in New London, Connecticut is 49, 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 8.635 μg/m3.
The current PM10 levels in New London, Connecticut are 16.297 μg/m3.
The current carbon monoxide (CO) level in New London, Connecticut is 0.353 ppm.
The current sulfur dioxide (SO2) levels in New London, Connecticut are 0.703 ppb.
The current ozone (O3) levels at New London, Connecticut is 52.023 ppm.
The current nitrogen dioxide (NO2) levels at New London, Connecticut is 6.729 ppb.
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