Stay updated with real-time air quality in Rancho Cucamonga, 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)
52
Moderate
Rancho Cucamonga, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
10.24 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
28.96 μg/m³
0
55
155
255
425
605+
29.05 ppb
0
55
71
86
201
201+
0.37 ppb
0
36
76
186
605
1005+
11.05 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Rancho Cucamonga, California
Rancho Cucamonga, California
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AQI 54
Moderate
10.74μg/m³
PM2.5
30.91μg/m³
PM10
29.61ppb
O3
0.39ppb
SO2
10.56ppb
NO2
0.17ppm
CO
AQI 54
Moderate
10.87μg/m³
PM2.5
31.95μg/m³
PM10
30.11ppb
O3
0.40ppb
SO2
11.15ppb
NO2
0.16ppm
CO
AQI 54
Moderate
10.64μg/m³
PM2.5
32.31μg/m³
PM10
28.97ppb
O3
0.39ppb
SO2
8.98ppb
NO2
0.19ppm
CO
AQI 52
Moderate
10.46μg/m³
PM2.5
31.89μg/m³
PM10
28.66ppb
O3
0.39ppb
SO2
8.51ppb
NO2
0.19ppm
CO
AQI 54
Moderate
10.92μg/m³
PM2.5
31.89μg/m³
PM10
29.85ppb
O3
0.39ppb
SO2
10.26ppb
NO2
0.17ppm
CO
AQI 52
Moderate
10.43μg/m³
PM2.5
23.57μg/m³
PM10
28.63ppb
O3
0.34ppb
SO2
10.04ppb
NO2
0.14ppm
CO
Air quality measurements for California, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Rancho Cucamonga, California is updated on an hourly basis.
The worst air quality in Rancho Cucamonga, California was recorded at 09:00:00 on 2025-06-06.
The best air quality in Rancho Cucamonga, California was recorded at 09:00:00 on 2025-06-06.
The real-time air quality index in Rancho Cucamonga, California is 52, currently categorized as Moderate.
The most common pollutant in Rancho Cucamonga, California is PM2.5.
If the air quality in Rancho Cucamonga, California is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Rancho Cucamonga, California at present are 10.238 μg/m3.
The current PM10 levels in Rancho Cucamonga, California are 28.958 μg/m3.
The current carbon monoxide (CO) level in Rancho Cucamonga, California is 0.159 ppm.
The current sulfur dioxide (SO2) levels in Rancho Cucamonga, California are 0.368 ppb.
The current ozone (O3) levels at Rancho Cucamonga, California is 29.05 ppm.
The current nitrogen dioxide (NO2) levels at Rancho Cucamonga, California is 11.054 ppb.
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