Stay updated with real-time air quality in Wilton, 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)
25
Good
Wilton, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.81 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.18 μg/m³
0
55
155
255
425
605+
27.42 ppb
0
55
71
86
201
201+
0.20 ppb
0
36
76
186
605
1005+
2.58 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Wilton, Connecticut
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AQI 27
Good
3.26μg/m³
PM2.5
12.99μg/m³
PM10
28.73ppb
O3
0.16ppb
SO2
2.95ppb
NO2
0.14ppm
CO
AQI 28
Good
3.66μg/m³
PM2.5
10.70μg/m³
PM10
29.87ppb
O3
0.15ppb
SO2
2.90ppb
NO2
0.15ppm
CO
AQI 27
Good
3.72μg/m³
PM2.5
10.66μg/m³
PM10
29.46ppb
O3
0.16ppb
SO2
2.76ppb
NO2
0.15ppm
CO
AQI 28
Good
3.50μg/m³
PM2.5
16.28μg/m³
PM10
29.55ppb
O3
0.16ppb
SO2
2.84ppb
NO2
0.14ppm
CO
AQI 27
Good
3.39μg/m³
PM2.5
14.77μg/m³
PM10
29.25ppb
O3
0.16ppb
SO2
2.88ppb
NO2
0.14ppm
CO
AQI 26
Good
3.50μg/m³
PM2.5
9.81μg/m³
PM10
27.87ppb
O3
0.17ppb
SO2
2.75ppb
NO2
0.14ppm
CO
The air quality data for Connecticut, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Wilton, Connecticut are available every hour.
Wilton, Connecticut experienced its worst air quality at 03:00:00, 2026-02-11.
The best air quality in Wilton, Connecticut was observed at 04:00:00 on 2026-02-12.
The air quality in Wilton, Connecticut right now is Good, with an AQI of 25.
In Wilton, Connecticut, O3 is the most frequently found pollutant.
When air quality in Wilton, Connecticut is compromised, staying indoors and wearing a mask can reduce health risks.
Wilton, Connecticut currently has a PM2.5 concentration of 2.809 μg/m3.
Wilton, Connecticut currently has a PM10 concentration of 11.177 μg/m3.
The current carbon monoxide (CO) level in Wilton, Connecticut is 0.149 ppm.
The current sulfur dioxide (SO2) concentration in Wilton, Connecticut is 0.197 ppb.
Wilton, Connecticut currently has an ozone (O3) concentration of 27.419 ppm.
The current level of nitrogen dioxide (NO2) in Wilton, Connecticut is 2.582 ppb.
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