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)
19
Good
Wilton, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
0.78 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
1.95 μg/m³
0
55
155
255
425
605+
20.56 ppb
0
55
71
86
201
201+
0.51 ppb
0
36
76
186
605
1005+
2.78 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Wilton, Connecticut
Wilton, Connecticut
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AQI 20
Good
0.81μg/m³
PM2.5
1.90μg/m³
PM10
22.30ppb
O3
0.50ppb
SO2
3.01ppb
NO2
0.28ppm
CO
AQI 19
Good
0.71μg/m³
PM2.5
1.94μg/m³
PM10
20.75ppb
O3
0.51ppb
SO2
2.71ppb
NO2
0.27ppm
CO
AQI 19
Good
0.73μg/m³
PM2.5
1.95μg/m³
PM10
21.44ppb
O3
0.52ppb
SO2
2.96ppb
NO2
0.26ppm
CO
AQI 20
Good
0.78μg/m³
PM2.5
1.83μg/m³
PM10
22.03ppb
O3
0.50ppb
SO2
2.41ppb
NO2
0.28ppm
CO
AQI 20
Good
0.78μg/m³
PM2.5
2.00μg/m³
PM10
22.47ppb
O3
0.50ppb
SO2
2.71ppb
NO2
0.28ppm
CO
AQI 20
Good
0.77μg/m³
PM2.5
2.08μg/m³
PM10
21.56ppb
O3
0.51ppb
SO2
3.14ppb
NO2
0.27ppm
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, 2026-09-28.
The best air quality in Wilton, Connecticut was observed at 10:00:00 on 2026-09-28.
The air quality in Wilton, Connecticut right now is Good, with an AQI of 19.
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 0.783 μg/m3.
Wilton, Connecticut currently has a PM10 concentration of 1.946 μg/m3.
The current carbon monoxide (CO) level in Wilton, Connecticut is 0.261 ppm.
The current sulfur dioxide (SO2) concentration in Wilton, Connecticut is 0.505 ppb.
Wilton, Connecticut currently has an ozone (O3) concentration of 20.558 ppm.
The current level of nitrogen dioxide (NO2) in Wilton, Connecticut is 2.778 ppb.
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