Current weather
Checking the latest reportMeasured conditions from the National Weather Service.
BEFORE YOU HEAD OUT
Simi Valley weather, air quality and conditions
Plan around Simi Valley’s forecast, nearby weather observations and current regional air reports.
Peak UV forecast
Checking the forecastThe EPA's daily peak forecast, with its own forecast date.
UV index guide ↗Weather alerts
Checking local alertsOfficial alerts covering the Simi Valley area.
View the official forecast and alerts ↗Forecast
Forecast
Loading the National Weather Service forecast…
Official NWS forecast ↗Gas prices
View the gas guide for available station reports and their report times. Confirm pump prices and any cash or membership conditions with the station.
Air quality and roads
Current air-quality and highway information from the official services.
Check air quality and road closures before heading out. For pollen levels, consult a local allergy forecast.
Sunrise and sunset
Plan around sunrise, sunset and the golden-hour windows, calculated for Simi Valley and shown in Pacific time.
Plan a golden hour →Conditions update throughout the day.
Rivers and streams
Latest readings from U.S. Geological Survey gauges near Simi Valley. Provisional data, not a flood forecast; follow National Weather Service flood warnings.
Santa Clara River near Piru CA
9.2 miles from the city center
- Flow
- Gage height
- Water temperature
Piru Creek below Santa Felicia Dam CA
13.1 miles from the city center
- Flow
- Gage height
- Water temperature
Sespe Creek near Fillmore
15.9 miles from the city center
- Flow
- Gage height
- Water temperature
Los Angeles River at Sepulveda Dam CA
17.3 miles from the city center
- Flow
- Gage height
- Water temperature
Where Simi Valley's readings come from
- Forecast
- National Weather Service Los Angeles, CA office, forecast grid square 139,58. NWS Los Angeles, CA ↗
- Backup station
- Van Nuys Airport (KVNY), used when the main station is not reporting. KVNY recent observations ↗
- UV index
- EPA daily UV forecast for ZIP code 93065. About the UV index ↗
- Air quality
- AirNow reporting area: Simi Valley, CA. AirNow ↗
- Weather alerts
- Active NWS alerts for the point at Simi Valley's center, in Ventura County. NWS alerts ↗
- Climate normals
- NOAA 1991–2020 normals at WOODLAND HILLS PIERCE COLLEGE, CA, 11.3 miles away: August averages a high of 97°F and December a low of 42°F, with about 17 inches of precipitation a year. NOAA normals data ↗