Air Quality in Rancho Cucamonga, United States

Windy
30.8°C · 22.0% humidity
30.8°
Feels 30.8°
44
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast
54 7am
54
54
44 10am
47
49
50 1pm
51
52
53 4pm
53
65
54 7pm
54
54
54 10pm
54
54
54 1am
54
54
66 4am
66
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.

22.0%
Humidity
51.1 km/h
Wind S
1009.2 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
44
10.54 µg/m³
PM10
38
41.15 µg/m³
050100150200300500

What is the weather forecast for Rancho Cucamonga?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.510.54 µg/m³ ✓ WHO
Good
PM1041.15 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (1 station within 25 km)
10.54
Median
10.54
Average
10.54
Low
10.54
High
PM2.5 µg/m³ · Model: 16.35 · Bias: +5.8

What is the 7-day forecast for Rancho Cucamonga?

07-21
30.8° 22.3°
07-22
32.5° 20.8°
07-23
32.8° 19.6°
0.38 mm
07-24
33.5° 21.3°
07-25
30.9° 21.2°
07-26
34.2° 18.6°
07-27
33.8° 20.8°
Both models agree Avg diff: 2.9°C

Where are air quality stations near Rancho Cucamonga?

57
Rubidoux - Mission Blvd, Riverside
20.2 km PM2.5: 15.0 µg/m³
165
Rubidoux - Mission Blvd, Riverside
20.2 km PM2.5: 82.6 µg/m³
168
Glendora-Laurel, Los Angeles
24.1 km PM2.5: 88.4 µg/m³
40
Glendora-Laurel, Los Angeles
24.1 km PM2.5: 9.6 µg/m³
153
Glendora-Laurel, Los Angeles
24.1 km PM2.5: 59.4 µg/m³
227
Glendora-Laurel, Los Angeles
24.1 km PM2.5: 176.7 µg/m³
260
Glendora-Laurel, Los Angeles
24.1 km PM2.5: 210.0 µg/m³
44
San Bernardino
24.6 km PM2.5: 10.5 µg/m³
38
4001 Iowa Ave Riverside CA
27.5 km PM2.5: 9.0 µg/m³
45
Emerbee's
28.4 km PM2.5: 10.8 µg/m³

What cities are near Rancho Cucamonga?

54 Upland 54 Ontario 54 Claremont 54 Chino 38 Jurupa Valley 38 Glen Avon 40 Fontana 54 Pomona 60 La Verne 37 Eastvale
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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 2026-07-21T17:15 UTC.