Air Quality in Simi Valley, United States

Windy
29.0°C · 20.6% humidity
29.0°
Feels 29.0°
22
Good
Air quality is satisfactory. Enjoy outdoor activities.
30 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
16 11am
16
16
22 2pm
20
19
18 5pm
18
17
17 8pm
17
16
16 11pm
16
16
16 2am
36
36
36 5am
36
36
16 8am
16
16
Station readings
17
25
12
17
CAMS model adj -18
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
54
54
54
54
54
34
34
34
AD 728×90

Air Quality Index Trend

40h · 1 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 annual guideline of 5 µg/m³.

20.6%
Humidity
57.1 km/h
Wind W
1011.6 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
22
5.22 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Simi Valley?

Temperature & Precipitation

PM2.5 Trend

40h · 1 station
PM2.55.22 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (30 stations within 25 km)
5.22
Median
4.93
Average
2.72
Low
12.6
High
PM2.5 µg/m³ · Model: 7.1 · Bias: +1.9

What is the 7-day forecast for Simi Valley?

05-28
28.0° 13.7°
05-29
29.0° 14.5°
05-30
21.4° 12.5°
05-31
29.3° 15.6°
06-01
31.8° 14.2°
06-02
28.0° 12.7°
06-03
29.4° 10.7°
Both models agree Avg diff: 3.8°C

Where are air quality stations near Simi Valley?

43
Simi Valley - Cochran Street, Ventura, California
9.0 km PM2.5: 10.3 µg/m³
26
Thousand Oaks-Moorpark Road, Ventura, California
10.5 km PM2.5: 6.2 µg/m³
19
Justice St ES (4692)
14.7 km PM2.5: 4.6 µg/m³
19
Haynes ES (4473)
15.1 km PM2.5: 4.6 µg/m³
31
Piru - Pacific, Ventura, California
15.2 km PM2.5: 7.4 µg/m³
18
Welby ES (7637)
15.8 km PM2.5: 4.2 µg/m³
24
Chatsworth ES (3027)
16.1 km PM2.5: 5.7 µg/m³
22
Nevada ES (5459)
16.8 km PM2.5: 5.3 µg/m³
18
Columbus MS (8102)
16.9 km PM2.5: 4.2 µg/m³
11
Chatsworth Public Library - Inside
17.2 km PM2.5: 2.7 µg/m³

What cities are near Simi Valley?

33 Moorpark 19 Thousand Oaks 19 Agoura 19 Agoura Hills 19 West Hills 19 Chatsworth 20 Calabasas 16 Canoga Park 52 Fillmore 19 Woodland Hills
Get AQI alerts for Simi Valley

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-28T21:47 UTC.