Air Quality in San Dimas, United States

Windy
27.8°C · 26.3% humidity
27.8°
Feels 27.8°
47
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast
54 4pm
54
54
47 7pm
49
50
51 10pm
52
53
53 1am
53
54
54 4am
54
54
54 7am
54
54
54 10am
54
54
54 1pm
54
54
AD 728×90

Air Quality Index Trend

48h · 2 stn

San Dimas's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

26.3%
Humidity
46.5 km/h
Wind S
1009.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
47
11.3 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for San Dimas?

Temperature & Precipitation

PM2.5 Trend

48h · 2 stations
PM2.511.3 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
11.3
Median
11.3
Average
11.3
Low
11.3
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +2.2

What is the 7-day forecast for San Dimas?

06-09
27.8° 13.9°
06-10
29.4° 15.5°
06-11
26.5° 15.5°
06-12
29.9° 16.2°
0.19 mm
06-13
33.1° 17.1°
06-14
28.2° 19.1°
06-15
25.6° 8.9°
Both models agree Avg diff: 2.7°C

Where are air quality stations near San Dimas?

52
Glendora-Laurel, Los Angeles
5.8 km PM2.5: 12.6 µg/m³
39
Glendora-Laurel, Los Angeles
5.8 km PM2.5: 9.4 µg/m³
14
Glendora-Laurel, Los Angeles
5.8 km PM2.5: 3.4 µg/m³
15
Glendora-Laurel, Los Angeles
5.8 km PM2.5: 3.6 µg/m³
22
Glendora-Laurel, Los Angeles
5.8 km PM2.5: 5.3 µg/m³

What cities are near San Dimas?

47 La Verne 47 Glendora 47 Pomona 45 Covina 47 Claremont 47 Diamond Bar 43 Azusa 39 Vincent 47 Walnut 38 West Covina
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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 2026-06-09T02:21 UTC.