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)
26
Good
Ridgefield, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.41 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.65 μg/m³
0
55
155
255
425
605+
27.64 ppb
0
55
71
86
201
201+
0.35 ppb
0
36
76
186
605
1005+
10.32 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Ridgefield, Connecticut
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AQI 44
Good
8.07μg/m³
PM2.5
43.12μg/m³
PM10
8.00ppb
O3
0.27ppb
SO2
29.87ppb
NO2
0.31ppm
CO
AQI 49
Good
8.82μg/m³
PM2.5
27.38μg/m³
PM10
4.27ppb
O3
0.28ppb
SO2
22.24ppb
NO2
0.31ppm
CO
AQI 66
Moderate
17.46μg/m³
PM2.5
27.60μg/m³
PM10
6.29ppb
O3
0.27ppb
SO2
20.36ppb
NO2
0.30ppm
CO
AQI 67
Moderate
18.06μg/m³
PM2.5
27.99μg/m³
PM10
5.84ppb
O3
0.27ppb
SO2
20.49ppb
NO2
0.31ppm
CO
AQI 54
Moderate
11.34μg/m³
PM2.5
22.06μg/m³
PM10
12.86ppb
O3
0.29ppb
SO2
15.16ppb
NO2
0.30ppm
CO
AQI 49
Good
9.08μg/m³
PM2.5
43.62μg/m³
PM10
8.60ppb
O3
0.28ppb
SO2
29.06ppb
NO2
0.32ppm
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 05:00:00, 2025-11-03.
The best air quality in Ridgefield, Connecticut was observed at 06:00:00 on 2025-11-02.
The air quality in Ridgefield, Connecticut right now is Good, with an AQI of 44.
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 8.325 μg/m3.
Ridgefield, Connecticut currently has a PM10 concentration of 35.915 μg/m3.
The current carbon monoxide (CO) level in Ridgefield, Connecticut is 0.328 ppm.
The current sulfur dioxide (SO2) concentration in Ridgefield, Connecticut is 0.715 ppb.
Ridgefield, Connecticut currently has an ozone (O3) concentration of 3.506 ppm.
The current level of nitrogen dioxide (NO2) in Ridgefield, Connecticut is 21.727 ppb.
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