Air Quality in Rancho Cucamonga, United States
Windy
31.3°C · 15.3% humidity
31.3°
Feels 31.3°
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
AQI Forecast
34
12pm
34
34
29
3pm
50
51
25
6pm
33
33
33
9pm
34
34
34
12am
34
54
54
3am
54
54
54
6am
54
54
54
9am
54
54
Air Quality Index Trend
48h · 1 stnRancho Cucamonga's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Rancho Cucamonga is 1.4× the WHO annual guideline of 5 µg/m³.
15.3%
Humidity
58.6 km/h
Wind SSW
1011.4 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.01 µg/m³
PM10
27.4 µg/m³
050100150200300500
What is the weather forecast for Rancho Cucamonga?
Temperature & Precipitation
PM2.5 Trend
48h · 1 stationPM2.57.01 µg/m³
✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX12.9
Extreme
Station readings (2 stations within 25 km)
7.01
Median
6.72
Average
5.23
Low
8.2
High
PM2.5 µg/m³ · Model: 10.85 · Bias: +3.8
What is the 7-day forecast for Rancho Cucamonga?
05-28
27.5° 13.6°
05-29
31.3° 13.7°
05-30
19.1° 9.9°
05-31
28.3° 16.5°
06-01
31.2° 11.7°
06-02
28.1° 9.2°
06-03
28.4° 6.7°
Both models agree
Avg diff: 4.8°C
Where are air quality stations near Rancho Cucamonga?
46
Rubidoux - Mission Blvd, Riverside
75
Rubidoux - Mission Blvd, Riverside
31
Glendora-Laurel, Los Angeles
21
Glendora-Laurel, Los Angeles
36
Glendora-Laurel, Los Angeles
10
Glendora-Laurel, Los Angeles
54
Glendora-Laurel, Los Angeles
22
San Bernardino
18
4001 Iowa Ave Riverside CA
21
Emerbee's
What cities are near Rancho Cucamonga?
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-28T22:54 UTC.