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)
27
Good
Shelton, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.94 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.66 μg/m³
0
55
155
255
425
605+
23.06 ppb
0
55
71
86
201
201+
0.67 ppb
0
36
76
186
605
1005+
4.85 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Shelton, Connecticut
Shelton, Connecticut
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AQI 27
Good
4.94μg/m³
PM2.5
17.66μg/m³
PM10
23.06ppb
O3
0.67ppb
SO2
4.85ppb
NO2
0.29ppm
CO
AQI 27
Good
4.94μg/m³
PM2.5
17.66μg/m³
PM10
23.06ppb
O3
0.67ppb
SO2
4.85ppb
NO2
0.29ppm
CO
AQI 27
Good
4.97μg/m³
PM2.5
18.22μg/m³
PM10
23.09ppb
O3
0.67ppb
SO2
4.77ppb
NO2
0.30ppm
CO
AQI 27
Good
4.86μg/m³
PM2.5
17.74μg/m³
PM10
23.01ppb
O3
0.67ppb
SO2
4.96ppb
NO2
0.29ppm
CO
AQI 27
Good
4.61μg/m³
PM2.5
11.83μg/m³
PM10
28.30ppb
O3
0.67ppb
SO2
5.16ppb
NO2
0.28ppm
CO
AQI 28
Good
4.58μg/m³
PM2.5
12.53μg/m³
PM10
29.97ppb
O3
0.61ppb
SO2
4.79ppb
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 10:00:00 on 2025-07-13.
In the last 24 hours, the best air quality in Shelton, Connecticut was observed at 12:00:00 on 2025-07-14.
As of now, the AQI in Shelton, Connecticut is 27, indicating Good 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 4.944 μg/m3.
The PM10 concentration in Shelton, Connecticut is 17.658 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Shelton, Connecticut is 0.295 ppm.
Currently, Shelton, Connecticut has a sulfur dioxide (SO2) concentration of 0.67 ppb.
The current ozone (O3) level in Shelton, Connecticut at the moment is 23.06 ppm.
Nitrogen dioxide (NO2) level in Shelton, Connecticut at the moment is 4.847 ppb.
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