Stay updated with real-time air quality in Shelton, 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
Shelton, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
10.79 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.86 μg/m³
0
55
155
255
425
605+
17.66 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
8.42 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Shelton, Connecticut
Shelton, Connecticut
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AQI 58
Moderate
12.96μg/m³
PM2.5
32.02μg/m³
PM10
45.57ppb
O3
0.98ppb
SO2
2.85ppb
NO2
0.28ppm
CO
AQI 58
Moderate
12.96μg/m³
PM2.5
32.02μg/m³
PM10
45.57ppb
O3
0.98ppb
SO2
2.85ppb
NO2
0.28ppm
CO
AQI 58
Moderate
12.95μg/m³
PM2.5
58.69μg/m³
PM10
44.50ppb
O3
0.99ppb
SO2
2.93ppb
NO2
0.29ppm
CO
AQI 52
Moderate
10.26μg/m³
PM2.5
43.66μg/m³
PM10
45.57ppb
O3
0.96ppb
SO2
2.81ppb
NO2
0.28ppm
CO
AQI 60
Moderate
13.88μg/m³
PM2.5
59.16μg/m³
PM10
45.50ppb
O3
1.00ppb
SO2
2.75ppb
NO2
0.29ppm
CO
AQI 105
Unhealthy for sensitive groups
12.18μg/m³
PM2.5
44.47μg/m³
PM10
72.31ppb
O3
1.00ppb
SO2
2.81ppb
NO2
0.30ppm
CO
Air quality and pollutant data for Connecticut, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Shelton, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Shelton, Connecticut was at its worst at 06:00:00 on 2025-07-29.
In the last 24 hours, the best air quality in Shelton, Connecticut was observed at 09:00:00 on 2025-07-29.
As of now, the AQI in Shelton, Connecticut is 58, indicating Moderate conditions.
Shelton, Connecticut air has the highest levels of PM2.5.
Poor air quality in Shelton, Connecticut means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Shelton, Connecticut are currently 12.955 μg/m3.
The PM10 concentration in Shelton, Connecticut is 32.024 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Shelton, Connecticut is 0.283 ppm.
Currently, Shelton, Connecticut has a sulfur dioxide (SO2) concentration of 0.978 ppb.
The current ozone (O3) level in Shelton, Connecticut at the moment is 45.567 ppm.
Nitrogen dioxide (NO2) level in Shelton, Connecticut at the moment is 2.845 ppb.
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