Air Quality in Simi Valley, United States

Windy
28.7°C · 21.4% humidity
28.7°
Feels 28.7°
41
Good
Air quality is satisfactory. Enjoy outdoor activities.
33 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
35 4pm
29
17
41 7pm
32
25
20 10pm
37
34
32 1am
31
30
30 4am
29
29
29 7am
28
28
28 10am
28
28
28 1pm
28
28
Station readings
35
29
17
CAMS model adj -26
54
54
54
34
34
34
34
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
AD 728×90

Air Quality Index Trend

47h · 2 stn

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

21.4%
Humidity
53.8 km/h
Wind W
1008.8 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
41
9.92 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations
PM2.59.92 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
9.92
Median
10.43
Average
3.48
Low
13.1
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +0.1
06-09
28.7° 15.0°
06-10
30.6° 15.1°
06-11
30.4° 15.4°
06-12
31.3° 15.9°
06-13
34.5° 16.2°
06-14
30.3° 18.1°
06-15
26.4° 14.8°
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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 2026-06-09T02:04 UTC.