Stay updated with real-time air quality in 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)
44
Good
Fairfield, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
7.73 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.09 μg/m³
0
55
155
255
425
605+
25.72 ppb
0
55
71
86
201
201+
1.96 ppb
0
36
76
186
605
1005+
9.59 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Fairfield, Connecticut
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AQI 38
Good
7.50μg/m³
PM2.5
14.28μg/m³
PM10
31.25ppb
O3
2.20ppb
SO2
7.15ppb
NO2
0.24ppm
CO
AQI 33
Good
6.41μg/m³
PM2.5
25.57μg/m³
PM10
26.40ppb
O3
2.35ppb
SO2
2.26ppb
NO2
0.25ppm
CO
AQI 44
Good
7.61μg/m³
PM2.5
24.11μg/m³
PM10
34.19ppb
O3
2.06ppb
SO2
7.07ppb
NO2
0.24ppm
CO
AQI 38
Good
6.86μg/m³
PM2.5
23.29μg/m³
PM10
28.41ppb
O3
2.35ppb
SO2
4.61ppb
NO2
0.25ppm
CO
AQI 38
Good
7.42μg/m³
PM2.5
18.69μg/m³
PM10
31.39ppb
O3
2.17ppb
SO2
6.41ppb
NO2
0.24ppm
CO
AQI 38
Good
6.69μg/m³
PM2.5
25.38μg/m³
PM10
26.94ppb
O3
2.37ppb
SO2
3.81ppb
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 Fairfield, Connecticut is updated every hour.
The worst air quality in Fairfield, Connecticut in the last 24 hours was observed at 09:00:00 on 2025-07-16.
In the last 24 hrs, the best air quality in Fairfield, Connecticut was observed at 10:00:00 on 2025-07-16.
The current air quality in Fairfield, Connecticut is 44, categorized as Good based on real-time data.
The most common pollutant in Fairfield, Connecticut is PM2.5.
If the air quality in Fairfield, Connecticut is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Fairfield, Connecticut is 8.061 μg/m3.
The current PM10 concentration at Fairfield, Connecticut is 20.003 μg/m3.
The current carbon monoxide (CO) concentration at Fairfield, Connecticut is 0.229 ppm.
The current sulfur dioxide (SO2) concentration at Fairfield, Connecticut is 2.351 ppb.
The current ozone (O3) concentration at Fairfield, Connecticut is 28.9 ppm.
The current nitrogen dioxide (NO2) concentration at Fairfield, Connecticut is 5.654 ppb.
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