Stay updated with real-time air quality in New Fairfield, 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)
21
Good
New Fairfield, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
0.86 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
2.04 μg/m³
0
55
155
255
425
605+
22.52 ppb
0
55
71
86
201
201+
0.51 ppb
0
36
76
186
605
1005+
3.85 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
New Fairfield, Connecticut
New Fairfield, Connecticut
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AQI 21
Good
0.89μg/m³
PM2.5
2.00μg/m³
PM10
22.73ppb
O3
0.51ppb
SO2
3.84ppb
NO2
0.26ppm
CO
AQI 21
Good
0.90μg/m³
PM2.5
2.00μg/m³
PM10
23.00ppb
O3
0.50ppb
SO2
3.92ppb
NO2
0.26ppm
CO
AQI 19
Good
0.74μg/m³
PM2.5
2.09μg/m³
PM10
21.36ppb
O3
0.51ppb
SO2
4.01ppb
NO2
0.26ppm
CO
AQI 21
Good
0.89μg/m³
PM2.5
2.00μg/m³
PM10
22.87ppb
O3
0.50ppb
SO2
3.87ppb
NO2
0.26ppm
CO
AQI 20
Good
0.78μg/m³
PM2.5
2.10μg/m³
PM10
21.51ppb
O3
0.59ppb
SO2
3.42ppb
NO2
0.23ppm
CO
AQI 19
Good
0.71μg/m³
PM2.5
2.04μg/m³
PM10
21.12ppb
O3
0.53ppb
SO2
3.92ppb
NO2
0.25ppm
CO
Air quality data and pollutant measurements for Connecticut, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for New Fairfield, Connecticut is updated every hour.
The worst air quality in New Fairfield, Connecticut in the last 24 hours was observed at 03:00:00 on 2026-09-28.
In the last 24 hrs, the best air quality in New Fairfield, Connecticut was observed at 09:00:00 on 2026-09-28.
The current air quality in New Fairfield, Connecticut is 21, categorized as Good based on real-time data.
The most common pollutant in New Fairfield, Connecticut is O3.
If the air quality in New Fairfield, Connecticut is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at New Fairfield, Connecticut is 0.862 μg/m3.
The current PM10 concentration at New Fairfield, Connecticut is 2.037 μg/m3.
The current carbon monoxide (CO) concentration at New Fairfield, Connecticut is 0.249 ppm.
The current sulfur dioxide (SO2) concentration at New Fairfield, Connecticut is 0.513 ppb.
The current ozone (O3) concentration at New Fairfield, Connecticut is 22.524 ppm.
The current nitrogen dioxide (NO2) concentration at New Fairfield, Connecticut is 3.851 ppb.
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