Air Quality in Simi Valley, United States

Windy
20.3°C · 57.2% humidity
20.3°
Feels 20.3°
58
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
28 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
55 4pm
54
53
21 7pm
27
14
2 10pm
0
0
0 1am
0
0
0 4am
2
2
14 7am
14
14
14 10am
14
27
14 1pm
14
14
Station readings
55
54
53
21
CAMS model adj -23
75
75
75
50
50
37
25
12
12
12
12
12
12
25
25
37
37
37
37
37
50
37
37
37
AD 728×90

PM2.5 Trend (24h)

33h · 1 station
57.2%
Humidity
44.2 km/h
Wind S
1012.1 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Simi Valley?

Temperature & Precipitation

PM2.515.37 µg/m³ ✓ WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (28 stations within 25 km)
15.37
Median
14.21
Average
3.51
Low
19.31
High
PM2.5 µg/m³ · Model: 8.9 · Bias: -6.5

What is the 7-day forecast for Simi Valley?

04-09
20.3° 13.5°
0.06 mm
04-10
17.9° 12.4°
7.06 mm
04-11
17.1° 10.2°
8.56 mm
04-12
13.7° 8.1°
0.19 mm
04-13
15.3° 7.1°
04-14
20.8° 8.9°
04-15
22.2° 13.7°
Both models agree Avg diff: 2.5°C

Where are air quality stations near Simi Valley?

43
Simi Valley - Cochran Street, Ventura, California
9.0 km
55
Thousand Oaks-Moorpark Road, Ventura, California
10.5 km
54
Justice St ES (4692)
14.7 km PM2.5: 13.5 µg/m³
53
Haynes ES (4473)
15.1 km PM2.5: 13.2 µg/m³
46
Piru - Pacific, Ventura, California
15.2 km
53
Welby ES (7637)
15.8 km PM2.5: 13.1 µg/m³
60
Chatsworth ES (3027)
16.1 km PM2.5: 16.3 µg/m³
56
Nevada ES (5459)
16.8 km PM2.5: 14.3 µg/m³
53
Columbus MS (8102)
16.9 km PM2.5: 13.0 µg/m³
15
Chatsworth Public Library - Inside
17.2 km PM2.5: 3.6 µg/m³

What cities are near Simi Valley?

58 Moorpark 58 Thousand Oaks 56 Agoura 57 Agoura Hills 56 West Hills 57 Chatsworth 56 Calabasas 56 Canoga Park 25 Fillmore 55 Woodland Hills

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T19:27 UTC.