Stay updated with real-time air quality in Ledyard, 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)
27
Good
Ledyard, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.95 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.79 μg/m³
0
55
155
255
425
605+
25.26 ppb
0
55
71
86
201
201+
0.50 ppb
0
36
76
186
605
1005+
7.35 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Ledyard, Connecticut
Ledyard, Connecticut
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AQI 49
Good
8.59μg/m³
PM2.5
47.12μg/m³
PM10
28.22ppb
O3
0.51ppb
SO2
5.29ppb
NO2
0.20ppm
CO
AQI 33
Good
5.65μg/m³
PM2.5
11.01μg/m³
PM10
25.33ppb
O3
0.50ppb
SO2
7.92ppb
NO2
0.20ppm
CO
AQI 27
Good
4.73μg/m³
PM2.5
7.12μg/m³
PM10
25.98ppb
O3
0.50ppb
SO2
8.25ppb
NO2
0.20ppm
CO
AQI 27
Good
4.73μg/m³
PM2.5
7.12μg/m³
PM10
25.98ppb
O3
0.50ppb
SO2
8.25ppb
NO2
0.20ppm
CO
AQI 27
Good
5.05μg/m³
PM2.5
8.42μg/m³
PM10
25.83ppb
O3
0.50ppb
SO2
8.16ppb
NO2
0.20ppm
CO
AQI 38
Good
7.44μg/m³
PM2.5
20.07μg/m³
PM10
24.64ppb
O3
0.50ppb
SO2
5.26ppb
NO2
0.21ppm
CO
Air quality data and pollutant measurements for Connecticut, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Ledyard, Connecticut is updated every hour.
The worst air quality in Ledyard, Connecticut in the last 24 hours was observed at 07:00:00 on 2025-06-06.
In the last 24 hrs, the best air quality in Ledyard, Connecticut was observed at 10:00:00 on 2025-06-07.
The current air quality in Ledyard, Connecticut is 27, categorized as Good based on real-time data.
The most common pollutant in Ledyard, Connecticut is PM2.5.
If the air quality in Ledyard, Connecticut is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Ledyard, Connecticut is 4.947 μg/m3.
The current PM10 concentration at Ledyard, Connecticut is 10.787 μg/m3.
The current carbon monoxide (CO) concentration at Ledyard, Connecticut is 0.203 ppm.
The current sulfur dioxide (SO2) concentration at Ledyard, Connecticut is 0.497 ppb.
The current ozone (O3) concentration at Ledyard, Connecticut is 25.263 ppm.
The current nitrogen dioxide (NO2) concentration at Ledyard, Connecticut is 7.351 ppb.
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