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)
133
Unhealthy for sensitive groups
Rialto, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.38 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
45.65 μg/m³
0
55
155
255
425
605+
80.04 ppb
0
55
71
86
201
201+
0.66 ppb
0
36
76
186
605
1005+
9.01 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Rialto, California
Rialto, California
Scroll To Air Quality MapLoading...
AQI 122
Unhealthy for sensitive groups
14.43μg/m³
PM2.5
59.49μg/m³
PM10
77.42ppb
O3
0.63ppb
SO2
9.66ppb
NO2
0.24ppm
CO
AQI 129
Unhealthy for sensitive groups
12.03μg/m³
PM2.5
52.56μg/m³
PM10
79.45ppb
O3
0.70ppb
SO2
8.79ppb
NO2
0.25ppm
CO
AQI 119
Unhealthy for sensitive groups
14.63μg/m³
PM2.5
59.33μg/m³
PM10
75.61ppb
O3
0.76ppb
SO2
11.33ppb
NO2
0.26ppm
CO
AQI 140
Unhealthy for sensitive groups
11.60μg/m³
PM2.5
51.03μg/m³
PM10
81.59ppb
O3
0.66ppb
SO2
7.33ppb
NO2
0.24ppm
CO
AQI 140
Unhealthy for sensitive groups
11.21μg/m³
PM2.5
50.89μg/m³
PM10
81.97ppb
O3
0.69ppb
SO2
7.83ppb
NO2
0.25ppm
CO
AQI 136
Unhealthy for sensitive groups
12.69μg/m³
PM2.5
53.83μg/m³
PM10
80.63ppb
O3
0.63ppb
SO2
7.30ppb
NO2
0.24ppm
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 09:00:00, 2026-07-23.
The best air quality in Rialto, California was observed at 12:00:00 on 2026-07-23.
The air quality in Rialto, California right now is Unhealthy for Sensitive Groups, with an AQI of 133.
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 11.378 μg/m3.
Rialto, California currently has a PM10 concentration of 45.652 μg/m3.
The current carbon monoxide (CO) level in Rialto, California is 0.246 ppm.
The current sulfur dioxide (SO2) concentration in Rialto, California is 0.662 ppb.
Rialto, California currently has an ozone (O3) concentration of 80.038 ppm.
The current level of nitrogen dioxide (NO2) in Rialto, California is 9.011 ppb.
All Rights Reserved © Ambee Inc. 2025