Air Quality in Simi Valley, United States

Clear
29.5°C · 49.2% humidity
29.5°
Feels 32.2°
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
34 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
28 5am
18
26
32 8am
18
16
15 11am
14
14
13 2pm
13
13
12 5pm
0
0
0 8pm
0
12
12 11pm
12
12
12 2am
12
12
Station readings
28
18
26
CAMS model adj -42
66
66
66
66
54
54
54
54
54
54
54
54
54
27
34
34
34
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.

49.2%
Humidity
22.8 km/h
Wind SSW
1016.0 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
32
7.83 µg/m³
PM10▲
56
66.15 µg/m³
050100150200300500

What is the weather forecast for Simi Valley?

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations
PM2.57.83 µg/m³ ✓ WHO
Good
PM1066.15 µg/m³
Moderate
UV INDEX2.2
Moderate
AD 300×250
Station readings (34 stations within 25 km)
7.83
Median
8.07
Average
3.1
Low
11.0
High
PM2.5 µg/m³ · Model: 23.6 · Bias: +15.8

What is the 7-day forecast for Simi Valley?

09-05
32.0° 21.6°
09-06
36.9° 19.0°
09-07
34.6° 20.0°
09-08
34.8° 15.2°
09-09
32.3° 17.3°
09-10
32.6° 14.1°
09-11
37.6° 20.5°
Both models agree Avg diff: 4.8°C

Where are air quality stations near Simi Valley?

20
united-states-of-america-moorpark-fishers-court
8.8 km 19.0°C 59.6% RH PM2.5: 4.7 µg/m³ PM10: 5.8 µg/m³
46
Simi Valley - Cochran Street, Ventura, California
9.0 km PM2.5: 11.0 µg/m³
13
Thousand Oaks-Moorpark Road, Ventura, California
10.5 km PM2.5: 3.1 µg/m³
42
Justice St ES (4692)
14.7 km PM2.5: 10.2 µg/m³
39
Haynes ES (4473)
15.1 km PM2.5: 9.3 µg/m³
30
Piru - Pacific, Ventura, California
15.2 km PM2.5: 7.2 µg/m³
38
Piru - Pacific, Ventura, California
15.2 km PM2.5: 9.1 µg/m³
35
Welby ES (7637)
15.8 km PM2.5: 8.5 µg/m³
44
Chatsworth ES (3027)
16.1 km PM2.5: 10.5 µg/m³
40
Nevada ES (5459)
16.8 km PM2.5: 9.7 µg/m³

What cities are near Simi Valley?

20 Moorpark 25 Thousand Oaks 35 Agoura 33 Agoura Hills 37 West Hills 34 Chatsworth 39 Calabasas 27 Canoga Park 25 Fillmore 35 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 2026-09-05T15:50 UTC.