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

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.23 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.53 μg/m³
0
55
155
255
425
605+
34.21 ppb
0
55
71
86
201
201+
0.55 ppb
0
36
76
186
605
1005+
6.34 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Ridgefield, Connecticut
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AQI 54
Moderate
10.69μg/m³
PM2.5
36.26μg/m³
PM10
35.35ppb
O3
0.59ppb
SO2
6.15ppb
NO2
0.25ppm
CO
AQI 54
Moderate
11.12μg/m³
PM2.5
29.40μg/m³
PM10
38.17ppb
O3
0.53ppb
SO2
5.86ppb
NO2
0.25ppm
CO
AQI 49
Good
9.43μg/m³
PM2.5
15.95μg/m³
PM10
40.59ppb
O3
0.52ppb
SO2
6.49ppb
NO2
0.21ppm
CO
AQI 52
Moderate
9.59μg/m³
PM2.5
14.11μg/m³
PM10
40.02ppb
O3
0.53ppb
SO2
6.60ppb
NO2
0.21ppm
CO
AQI 49
Good
9.38μg/m³
PM2.5
38.09μg/m³
PM10
47.47ppb
O3
0.47ppb
SO2
3.85ppb
NO2
0.23ppm
CO
AQI 32
Good
3.60μg/m³
PM2.5
12.58μg/m³
PM10
35.15ppb
O3
0.65ppb
SO2
5.90ppb
NO2
0.26ppm
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 Ridgefield, Connecticut are available every hour.
Ridgefield, Connecticut experienced its worst air quality at 10:00:00, 2026-06-28.
The best air quality in Ridgefield, Connecticut was observed at 07:00:00 on 2026-06-29.
The air quality in Ridgefield, Connecticut right now is Moderate, with an AQI of 54.
In Ridgefield, Connecticut, PM2.5 is the most frequently found pollutant.
When air quality in Ridgefield, Connecticut is compromised, staying indoors and wearing a mask can reduce health risks.
Ridgefield, Connecticut currently has a PM2.5 concentration of 11.233 μg/m3.
Ridgefield, Connecticut currently has a PM10 concentration of 29.526 μg/m3.
The current carbon monoxide (CO) level in Ridgefield, Connecticut is 0.219 ppm.
The current sulfur dioxide (SO2) concentration in Ridgefield, Connecticut is 0.549 ppb.
Ridgefield, Connecticut currently has an ozone (O3) concentration of 34.21 ppm.
The current level of nitrogen dioxide (NO2) in Ridgefield, Connecticut is 6.34 ppb.
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