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)
33
Good
Shelton, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.40 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
30.00 μg/m³
0
55
155
255
425
605+
34.23 ppb
0
55
71
86
201
201+
0.27 ppb
0
36
76
186
605
1005+
6.80 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Shelton, Connecticut
Shelton, Connecticut
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AQI 42
Good
4.30μg/m³
PM2.5
12.42μg/m³
PM10
44.62ppb
O3
0.20ppb
SO2
5.52ppb
NO2
0.20ppm
CO
AQI 42
Good
4.30μg/m³
PM2.5
12.42μg/m³
PM10
44.62ppb
O3
0.20ppb
SO2
5.52ppb
NO2
0.20ppm
CO
AQI 41
Good
4.31μg/m³
PM2.5
13.29μg/m³
PM10
43.97ppb
O3
0.22ppb
SO2
6.02ppb
NO2
0.20ppm
CO
AQI 41
Good
4.11μg/m³
PM2.5
12.41μg/m³
PM10
44.27ppb
O3
0.21ppb
SO2
6.05ppb
NO2
0.20ppm
CO
AQI 40
Good
3.56μg/m³
PM2.5
13.53μg/m³
PM10
43.46ppb
O3
0.17ppb
SO2
5.40ppb
NO2
0.20ppm
CO
AQI 46
Good
4.51μg/m³
PM2.5
15.55μg/m³
PM10
50.04ppb
O3
0.17ppb
SO2
6.09ppb
NO2
0.20ppm
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 10:00:00 on 2025-09-11.
In the last 24 hours, the best air quality in Shelton, Connecticut was observed at 03:00:00 on 2025-09-11.
As of now, the AQI in Shelton, Connecticut is 42, indicating Good conditions.
Shelton, Connecticut air has the highest levels of O3.
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 4.297 μg/m3.
The PM10 concentration in Shelton, Connecticut is 12.424 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Shelton, Connecticut is 0.2 ppm.
Currently, Shelton, Connecticut has a sulfur dioxide (SO2) concentration of 0.201 ppb.
The current ozone (O3) level in Shelton, Connecticut at the moment is 44.621 ppm.
Nitrogen dioxide (NO2) level in Shelton, Connecticut at the moment is 5.52 ppb.
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