Air Quality in Rancho Cucamonga, United States

Windy
28.4°C · 18.1% humidity
28.4°
Feels 28.4°
62
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast
54 3pm
54
54
62 6pm
60
58
57 9pm
56
56
55 12am
55
55
54 3am
54
54
54 6am
54
54
54 9am
54
54
54 12pm
54
54
AD 728×90

Air Quality Index Trend

48h · 1 stn

Rancho 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 1.2× the WHO 24-hour guideline of 15 µg/m³.

18.1%
Humidity
67.6 km/h
Wind SSW
1009.3 hPa
Pressure
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
62
17.48 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Rancho Cucamonga?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.517.48 µg/m³ ×1.2 WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX6.9
High
AD 300×250
Station readings (2 stations within 25 km)
17.48
Median
17.39
Average
13.69
Low
21.1
High
PM2.5 µg/m³ · Model: 16.35 · Bias: -1.1

What is the 7-day forecast for Rancho Cucamonga?

06-09
28.4° 12.7°
06-10
30.7° 14.7°
06-11
28.3° 15.1°
06-12
30.2° 17.1°
0.06 mm
06-13
33.6° 16.5°
06-14
28.1° 18.8°
06-15
26.7° 10.2°
0.13 mm
Both models agree Avg diff: 3.1°C

Where are air quality stations near Rancho Cucamonga?

16
Rubidoux - Mission Blvd, Riverside
20.2 km PM2.5: 3.8 µg/m³
12
Rubidoux - Mission Blvd, Riverside
20.2 km PM2.5: 2.9 µg/m³
15
Glendora-Laurel, Los Angeles
24.1 km PM2.5: 3.6 µg/m³
53
Glendora-Laurel, Los Angeles
24.1 km PM2.5: 13.1 µg/m³
19
Glendora-Laurel, Los Angeles
24.1 km PM2.5: 4.6 µg/m³
14
Glendora-Laurel, Los Angeles
24.1 km PM2.5: 3.4 µg/m³
40
Glendora-Laurel, Los Angeles
24.1 km PM2.5: 9.6 µg/m³
54
San Bernardino
24.6 km PM2.5: 13.7 µg/m³
48
4001 Iowa Ave Riverside CA
27.5 km PM2.5: 11.4 µg/m³
52
Emerbee's
28.4 km PM2.5: 12.5 µg/m³

What cities are near Rancho Cucamonga?

70 Upland 70 Ontario 70 Claremont 70 Chino 47 Jurupa Valley 47 Glen Avon 46 Fontana 70 Pomona 70 La Verne 45 Eastvale
Get AQI alerts for Rancho Cucamonga

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T01:04 UTC.