Stay updated with real-time air quality in Fairfield, California 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)
33
Good
Fairfield, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.39 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.03 μg/m³
0
55
155
255
425
605+
35.76 ppb
0
55
71
86
201
201+
0.47 ppb
0
36
76
186
605
1005+
1.90 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Fairfield, California
Fairfield, California
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AQI 33
Good
4.39μg/m³
PM2.5
20.03μg/m³
PM10
35.76ppb
O3
0.47ppb
SO2
1.90ppb
NO2
0.26ppm
CO
AQI 34
Good
3.17μg/m³
PM2.5
13.75μg/m³
PM10
36.94ppb
O3
0.53ppb
SO2
2.01ppb
NO2
0.24ppm
CO
AQI 36
Good
5.65μg/m³
PM2.5
24.84μg/m³
PM10
38.52ppb
O3
0.45ppb
SO2
1.60ppb
NO2
0.22ppm
CO
AQI 38
Good
7.32μg/m³
PM2.5
28.33μg/m³
PM10
40.30ppb
O3
0.51ppb
SO2
1.63ppb
NO2
0.26ppm
CO
AQI 36
Good
3.22μg/m³
PM2.5
13.35μg/m³
PM10
38.98ppb
O3
0.41ppb
SO2
1.20ppb
NO2
0.26ppm
CO
AQI 36
Good
6.25μg/m³
PM2.5
27.73μg/m³
PM10
38.98ppb
O3
0.40ppb
SO2
1.50ppb
NO2
0.20ppm
CO
The air quality data for California, 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 Fairfield, California are available every hour.
Fairfield, California experienced its worst air quality at 08:00:00, 2026-04-25.
The best air quality in Fairfield, California was observed at 11:00:00 on 2026-04-25.
The air quality in Fairfield, California right now is Good, with an AQI of 33.
In Fairfield, California, O3 is the most frequently found pollutant.
When air quality in Fairfield, California is compromised, staying indoors and wearing a mask can reduce health risks.
Fairfield, California currently has a PM2.5 concentration of 4.389 μg/m3.
Fairfield, California currently has a PM10 concentration of 20.03 μg/m3.
The current carbon monoxide (CO) level in Fairfield, California is 0.259 ppm.
The current sulfur dioxide (SO2) concentration in Fairfield, California is 0.466 ppb.
Fairfield, California currently has an ozone (O3) concentration of 35.763 ppm.
The current level of nitrogen dioxide (NO2) in Fairfield, California is 1.904 ppb.
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