Stay updated with real-time air quality in Fontana, 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)
62
Moderate
Fontana, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
15.02 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
55.81 μg/m³
0
55
155
255
425
605+
8.48 ppb
0
55
71
86
201
201+
1.35 ppb
0
36
76
186
605
1005+
40.62 ppb
0
54
101
361
1250
2050+
0.96 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Fontana, California
Fontana, California
Scroll To Air Quality MapLoading...
AQI 64
Moderate
16.40μg/m³
PM2.5
58.66μg/m³
PM10
9.48ppb
O3
1.18ppb
SO2
38.55ppb
NO2
0.98ppm
CO
AQI 54
Moderate
10.58μg/m³
PM2.5
28.10μg/m³
PM10
7.84ppb
O3
1.07ppb
SO2
31.16ppb
NO2
0.93ppm
CO
AQI 56
Moderate
11.75μg/m³
PM2.5
47.45μg/m³
PM10
14.01ppb
O3
1.14ppb
SO2
35.02ppb
NO2
0.84ppm
CO
AQI 56
Moderate
11.94μg/m³
PM2.5
49.74μg/m³
PM10
15.54ppb
O3
1.07ppb
SO2
33.18ppb
NO2
0.81ppm
CO
AQI 66
Moderate
17.06μg/m³
PM2.5
66.52μg/m³
PM10
5.12ppb
O3
1.19ppb
SO2
29.30ppb
NO2
1.00ppm
CO
AQI 60
Moderate
13.80μg/m³
PM2.5
53.97μg/m³
PM10
13.83ppb
O3
1.09ppb
SO2
34.24ppb
NO2
0.88ppm
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 Fontana, California are available every hour.
Fontana, California experienced its worst air quality at 08:00:00, 2025-10-21.
The best air quality in Fontana, California was observed at 08:00:00 on 2025-10-20.
The air quality in Fontana, California right now is Moderate, with an AQI of 62.
In Fontana, California, PM2.5 is the most frequently found pollutant.
When air quality in Fontana, California is compromised, staying indoors and wearing a mask can reduce health risks.
Fontana, California currently has a PM2.5 concentration of 15.022 μg/m3.
Fontana, California currently has a PM10 concentration of 55.812 μg/m3.
The current carbon monoxide (CO) level in Fontana, California is 0.964 ppm.
The current sulfur dioxide (SO2) concentration in Fontana, California is 1.346 ppb.
Fontana, California currently has an ozone (O3) concentration of 8.478 ppm.
The current level of nitrogen dioxide (NO2) in Fontana, California is 40.619 ppb.
All Rights Reserved © Ambee Inc. 2025