Air Quality in Rancho Cucamonga, United States

Clear
27.1°C · 47.6% humidity
27.1°
Feels 28.8°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast
66 5am
66
66
23 8am
32
38
23 11am
19
21
23 2pm
24
32
32 5pm
33
53
53 8pm
54
54
54 11pm
54
54
54 2am
54
54
AD 728×90

Air Quality Index Trend

45h · 10 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.

47.6%
Humidity
32.0 km/h
Wind S
1017.0 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
23
5.6 µg/m³
PM10▲
38
41.15 µg/m³
050100150200300500

What is the weather forecast for Rancho Cucamonga?

Temperature & Precipitation

PM2.5 Trend

45h · 10 stations
PM2.55.6 µg/m³ ✓ WHO
Good
PM1041.15 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (3 stations within 25 km)
5.6
Median
5.88
Average
3.4
Low
10.13
High
PM2.5 µg/m³ · Model: 16.35 · Bias: +10.8

What is the 7-day forecast for Rancho Cucamonga?

09-05
28.6° 19.0°
09-06
32.8° 17.7°
09-07
34.7° 17.3°
1.13 mm
09-08
34.6° 12.6°
0.44 mm
09-09
31.0° 15.6°
09-10
31.8° 11.3°
09-11
36.6° 16.4°
Both models agree Avg diff: 5.2°C

Where are air quality stations near Rancho Cucamonga?

17
Rubidoux - Mission Blvd, Riverside
20.2 km PM2.5: 4.1 µg/m³
14
Glendora-Laurel, Los Angeles
24.1 km PM2.5: 3.4 µg/m³
42
San Bernardino
24.6 km PM2.5: 10.1 µg/m³
32
4001 Iowa Ave Riverside CA
27.5 km PM2.5: 7.6 µg/m³
31
Emerbee's
28.4 km PM2.5: 7.5 µg/m³
24
C&C Center
29.2 km PM2.5: 5.7 µg/m³

What cities are near Rancho Cucamonga?

15 Upland 15 Ontario 14 Claremont 14 Chino 25 Jurupa Valley 23 Glen Avon 30 Fontana 14 Pomona 14 La Verne 24 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 2026-09-05T15:51 UTC.