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)
52
Moderate
New London, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.99 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.14 μg/m³
0
55
155
255
425
605+
51.98 ppb
0
55
71
86
201
201+
0.27 ppb
0
36
76
186
605
1005+
6.67 ppb
0
54
101
361
1250
2050+
0.24 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
10.89μg/m³
PM2.5
18.13μg/m³
PM10
33.98ppb
O3
0.12ppb
SO2
7.86ppb
NO2
0.26ppm
CO
AQI 54
Moderate
10.76μg/m³
PM2.5
19.49μg/m³
PM10
33.70ppb
O3
0.13ppb
SO2
7.85ppb
NO2
0.26ppm
CO
AQI 49
Good
9.12μg/m³
PM2.5
37.26μg/m³
PM10
28.50ppb
O3
0.27ppb
SO2
8.00ppb
NO2
0.26ppm
CO
AQI 54
Moderate
10.54μg/m³
PM2.5
23.06μg/m³
PM10
33.88ppb
O3
0.17ppb
SO2
7.53ppb
NO2
0.26ppm
CO
AQI 54
Moderate
10.52μg/m³
PM2.5
21.72μg/m³
PM10
33.30ppb
O3
0.15ppb
SO2
7.82ppb
NO2
0.26ppm
CO
AQI 52
Moderate
9.67μg/m³
PM2.5
32.33μg/m³
PM10
30.93ppb
O3
0.18ppb
SO2
7.18ppb
NO2
0.26ppm
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 09:00:00 on 2025-07-29.
The best air quality in New London, Connecticut was recorded at 02:00:00 on 2025-07-30.
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 10.887 μg/m3.
The current PM10 levels in New London, Connecticut are 18.134 μg/m3.
The current carbon monoxide (CO) level in New London, Connecticut is 0.261 ppm.
The current sulfur dioxide (SO2) levels in New London, Connecticut are 0.12 ppb.
The current ozone (O3) levels at New London, Connecticut is 33.975 ppm.
The current nitrogen dioxide (NO2) levels at New London, Connecticut is 7.862 ppb.
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