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)
42
Good
Ridgefield, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.24 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.71 μg/m³
0
55
155
255
425
605+
44.61 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
5.63 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Ridgefield, Connecticut
Scroll To Air Quality MapLoading...
AQI 42
Good
6.02μg/m³
PM2.5
18.41μg/m³
PM10
44.67ppb
O3
0.33ppb
SO2
7.14ppb
NO2
0.24ppm
CO
AQI 40
Good
5.10μg/m³
PM2.5
20.88μg/m³
PM10
42.97ppb
O3
0.35ppb
SO2
5.75ppb
NO2
0.23ppm
CO
AQI 42
Good
6.70μg/m³
PM2.5
13.38μg/m³
PM10
45.02ppb
O3
0.32ppb
SO2
4.02ppb
NO2
0.22ppm
CO
AQI 42
Good
6.79μg/m³
PM2.5
13.04μg/m³
PM10
44.99ppb
O3
0.31ppb
SO2
4.05ppb
NO2
0.22ppm
CO
AQI 44
Good
5.76μg/m³
PM2.5
16.89μg/m³
PM10
46.62ppb
O3
0.40ppb
SO2
2.95ppb
NO2
0.22ppm
CO
AQI 42
Good
5.66μg/m³
PM2.5
20.01μg/m³
PM10
44.65ppb
O3
0.34ppb
SO2
7.87ppb
NO2
0.25ppm
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, 2026-03-29.
The best air quality in Ridgefield, Connecticut was observed at 03:00:00 on 2026-03-29.
The air quality in Ridgefield, Connecticut right now is Good, with an AQI of 42.
In Ridgefield, Connecticut, O3 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 5.241 μg/m3.
Ridgefield, Connecticut currently has a PM10 concentration of 14.709 μg/m3.
The current carbon monoxide (CO) level in Ridgefield, Connecticut is 0.228 ppm.
The current sulfur dioxide (SO2) concentration in Ridgefield, Connecticut is 0.328 ppb.
Ridgefield, Connecticut currently has an ozone (O3) concentration of 44.607 ppm.
The current level of nitrogen dioxide (NO2) in Ridgefield, Connecticut is 5.628 ppb.
All Rights Reserved © Ambee Inc. 2025