Stay updated with real-time air quality in Rialto, 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)
54
Moderate
Rialto, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.36 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.35 μg/m³
0
55
155
255
425
605+
56.29 ppb
0
55
71
86
201
201+
0.68 ppb
0
36
76
186
605
1005+
14.46 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Very high
Rialto, California
Rialto, California
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AQI 56
Moderate
11.61μg/m³
PM2.5
51.10μg/m³
PM10
49.38ppb
O3
3.73ppb
SO2
10.96ppb
NO2
0.18ppm
CO
AQI 52
Moderate
10.26μg/m³
PM2.5
45.45μg/m³
PM10
49.98ppb
O3
3.19ppb
SO2
9.37ppb
NO2
0.17ppm
CO
AQI 56
Moderate
11.84μg/m³
PM2.5
52.14μg/m³
PM10
48.50ppb
O3
3.78ppb
SO2
11.28ppb
NO2
0.18ppm
CO
AQI 54
Moderate
10.83μg/m³
PM2.5
47.78μg/m³
PM10
50.10ppb
O3
3.48ppb
SO2
9.59ppb
NO2
0.18ppm
CO
AQI 52
Moderate
10.44μg/m³
PM2.5
45.97μg/m³
PM10
50.38ppb
O3
3.24ppb
SO2
9.08ppb
NO2
0.18ppm
CO
AQI 54
Moderate
11.01μg/m³
PM2.5
48.32μg/m³
PM10
50.02ppb
O3
3.51ppb
SO2
9.66ppb
NO2
0.18ppm
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 Rialto, California are available every hour.
Rialto, California experienced its worst air quality at 12:00:00, 2026-04-24.
The best air quality in Rialto, California was observed at 02:00:00 on 2026-04-23.
The air quality in Rialto, California right now is Moderate, with an AQI of 54.
In Rialto, California, O3 is the most frequently found pollutant.
When air quality in Rialto, California is compromised, staying indoors and wearing a mask can reduce health risks.
Rialto, California currently has a PM2.5 concentration of 8.359 μg/m3.
Rialto, California currently has a PM10 concentration of 29.351 μg/m3.
The current carbon monoxide (CO) level in Rialto, California is 0.272 ppm.
The current sulfur dioxide (SO2) concentration in Rialto, California is 0.684 ppb.
Rialto, California currently has an ozone (O3) concentration of 56.291 ppm.
The current level of nitrogen dioxide (NO2) in Rialto, California is 14.46 ppb.
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