Air Quality in Simi Valley, United States

Clear
31.4°C · 26.2% humidity
31.4°
Feels 31.4°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
29 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
37 7am
19
23
30 10am
26
26
26 1pm
26
26
26 4pm
26
6
0 7pm
0
0
0 10pm
0
6
6 1am
6
6
6 4am
6
6
Station readings
37
19
23
CAMS model adj -28
54
54
34
54
54
54
54
54
54
54
54
34
27
27
27
27
27
34
34
34
34
34
34
34
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.

26.2%
Humidity
22.4 km/h
Wind S
1008.2 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
30
7.31 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Simi Valley?

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations
PM2.57.31 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX9.4
Very High
AD 300×250
Station readings (29 stations within 25 km)
7.31
Median
7.64
Average
2.96
Low
11.94
High
PM2.5 µg/m³ · Model: 8.2 · Bias: +0.9
Both models agree Avg diff: 3.2°C

Where are air quality stations near Simi Valley?

21
united-states-of-america-moorpark-fishers-court
8.8 km 34.0°C 29.5% RH PM2.5: 5.0 µg/m³ PM10: 5.1 µg/m³
99
Simi Valley - Cochran Street, Ventura, California
9.0 km PM2.5: 34.9 µg/m³
56
Thousand Oaks-Moorpark Road, Ventura, California
10.5 km PM2.5: 14.5 µg/m³
32
Justice St ES (4692)
14.7 km PM2.5: 7.7 µg/m³
29
Haynes ES (4473)
15.1 km PM2.5: 7.0 µg/m³
38
Piru - Pacific, Ventura, California
15.2 km PM2.5: 9.1 µg/m³
28
Welby ES (7637)
15.8 km PM2.5: 6.8 µg/m³
40
Chatsworth ES (3027)
16.1 km PM2.5: 9.6 µg/m³
38
Nevada ES (5459)
16.8 km PM2.5: 9.1 µg/m³
32
Columbus MS (8102)
16.9 km PM2.5: 7.6 µg/m³

What cities are near Simi Valley?

25 Moorpark 29 Thousand Oaks 32 Agoura 31 Agoura Hills 30 West Hills 29 Chatsworth 33 Calabasas 25 Canoga Park 25 Fillmore 31 Woodland Hills
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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 2026-07-21T17:13 UTC.