Air Quality in San Dimas, United States

Clear
18.7°C · 30.4% humidity
18.7°
Feels 18.7°
36
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast
54 9pm
54
54
36 12am
41
45
47 3am
49
51
52 6am
52
53
53 9am
53
54
54 12pm
54
54
54 3pm
54
54
54 6pm
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.

30.4%
Humidity
30.9 km/h
Wind N
1011.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
36
8.6 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for San Dimas?

Temperature & Precipitation

PM2.5 Trend

48h · 2 stations
PM2.58.6 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
8.6
Median
8.6
Average
8.6
Low
8.6
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +4.9

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?

51
Glendora-Laurel, Los Angeles
5.8 km PM2.5: 12.1 µg/m³
60
Glendora-Laurel, Los Angeles
5.8 km PM2.5: 16.4 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
19
Glendora-Laurel, Los Angeles
5.8 km PM2.5: 4.6 µg/m³

What cities are near San Dimas?

36 La Verne 36 Glendora 36 Pomona 36 Covina 36 Claremont 36 Diamond Bar 35 Azusa 36 Vincent 36 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 2026-06-09T07:42 UTC.