Air Quality in Rancho Cucamonga, United States

Drizzle
14.6°C · 62.4% humidity
14.6°
Feels 14.6°
53
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
40 10pm
39
33
43 1am
43
43
43 4am
43
43
43 7am
43
43
43 10am
43
43
43 1pm
43
43
43 4pm
18
18
18 7pm
5
5
Station readings
40
39
33
CAMS model adj -32
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
50
50
50
37
37
AD 728×90

PM2.5 Trend (24h)

26h · 1 station
62.4%
Humidity
72.6 km/h
Wind SW
1010.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Rancho Cucamonga?

Temperature & Precipitation

PM2.512.94 µg/m³ ✓ WHO
Moderate
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
12.94
Median
12.94
Average
12.94
Low
12.94
High
PM2.5 µg/m³ · Model: 23.4 · Bias: +10.5

What is the 7-day forecast for Rancho Cucamonga?

04-10
14.6° 8.7°
7.13 mm
04-11
9.1° 5.7°
27.19 mm
04-12
8.2° 3.1°
1.5 mm
04-13
10.7° 3.1°
0.62 mm
04-14
15.6° 7.0°
04-15
18.9° 11.0°
04-16
21.3° 12.4°
Both models agree Avg diff: 3.5°C

Where are air quality stations near Rancho Cucamonga?

45
Rubidoux - Mission Blvd, Riverside
20.2 km
30
Rubidoux - Mission Blvd, Riverside
20.2 km
52
San Bernardino
24.6 km PM2.5: 12.4 µg/m³
37
4001 Iowa Ave Riverside CA
27.5 km PM2.5: 8.8 µg/m³
42
Emerbee's
28.4 km PM2.5: 10.1 µg/m³
27
C&C Center
29.2 km PM2.5: 6.4 µg/m³

What cities are near Rancho Cucamonga?

38 Upland 36 Ontario 29 Claremont 35 Chino 38 Jurupa Valley 38 Glen Avon 38 Fontana 28 Pomona 49 La Verne 36 Eastvale

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-10T01:01 UTC.