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
Air Quality Index Trend
48h · 2 stnSan 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▲
8.6 µg/m³
PM10
27.4 µg/m³
050100150200300500
What is the weather forecast for San Dimas?
Temperature & Precipitation
PM2.5 Trend
48h · 2 stationsPM2.58.6 µg/m³
✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
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
60
Glendora-Laurel, Los Angeles
14
Glendora-Laurel, Los Angeles
15
Glendora-Laurel, Los Angeles
19
Glendora-Laurel, Los Angeles
What cities are near San Dimas?
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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.