Air Quality in Simi Valley, United States

Clear
32.0°C · 25.2% humidity
32.0°
Feels 32.0°
59
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
58 1pm
26
36
59 4pm
54
51
48 7pm
46
45
44 10pm
44
43
43 1am
43
42
42 4am
42
42
42 7am
42
42
42 10am
42
42
Station readings
58
26
36
CAMS model adj -12
54
54
54
54
54
54
54
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. Current PM2.5 concentration in Simi Valley is 1.0× the WHO 24-hour guideline of 15 µg/m³.

25.2%
Humidity
21.9 km/h
Wind SSW
1009.9 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
59
15.68 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Simi Valley?

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations
PM2.515.68 µg/m³ ✓ WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (2 stations within 25 km)
15.68
Median
11.68
Average
5.5
Low
17.85
High
PM2.5 µg/m³ · Model: 16.35 · Bias: +0.7

What is the 7-day forecast for Simi Valley?

08-03
33.9° 20.9°
08-04
32.9° 23.3°
08-05
34.9° 19.1°
08-06
34.1° 14.5°
08-07
32.2° 17.1°
08-08
31.9° 17.4°
08-09
32.5° 13.9°
Both models agree Avg diff: 3.0°C

Where are air quality stations near Simi Valley?

40
united-states-of-america-moorpark-fishers-court
8.8 km 36.1°C 30.1% RH PM2.5: 9.5 µg/m³ PM10: 15.0 µg/m³
53
Simi Valley - Cochran Street, Ventura, California
9.0 km PM2.5: 13.1 µg/m³
42
Thousand Oaks-Moorpark Road, Ventura, California
10.5 km PM2.5: 10.1 µg/m³
50
Thousand Oaks-Moorpark Road, Ventura, California
10.5 km PM2.5: 12.0 µg/m³
31
Justice St ES (4692)
14.7 km PM2.5: 7.4 µg/m³
35
Haynes ES (4473)
15.1 km PM2.5: 8.5 µg/m³
32
Welby ES (7637)
15.8 km PM2.5: 7.6 µg/m³
35
Chatsworth ES (3027)
16.1 km PM2.5: 8.3 µg/m³
31
Nevada ES (5459)
16.8 km PM2.5: 7.4 µg/m³
28
Columbus MS (8102)
16.9 km PM2.5: 6.7 µg/m³

What cities are near Simi Valley?

63 Moorpark 63 Thousand Oaks 48 Agoura 52 Agoura Hills 30 West Hills 23 Chatsworth 23 Calabasas 23 Canoga Park 63 Fillmore 23 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 2026-08-07T23:56 UTC.