Simi Valley, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Simi Valley weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——83°62°—
- MondayJul 6Clear——83°60°0°
- TuesdayJul 7Clear——93°64°+10°
- WednesdayJul 8Clear——95°66°+2°
- ThursdayJul 9Clear——100°67°+5°
- FridayJul 10Clear——96°67°-4°
- SaturdayJul 11Overcast——96°65°0°
AQI 45 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 10.8 µg/m³ (AQI 54) with a 0.79 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 10.8 µg/m³ (AQI 54) with a 0.79 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.79
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:11 PM
- Moonset
- 11:14 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Simi Valley at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: March 13 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 93063, 93065
16-Day Forecast — Simi Valley
- Sun83°62°1%
- Mon83°60°0%
- Tue93°64°0%
- Wed95°66°0%
- Thu100°67°0%
- Fri96°67°0%
- Sat96°65°1%
- Sun98°67°3%
- Mon99°69°5%
- Tue97°73°6%
- Wed101°76°1%
- Thu102°75°10%
- Fri109°77°9%
- Sat117°82°6%
- Sun100°79°10%
- Mon100°73°10%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Simi Valley
Right now in the garden
Peak growing season
As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
ZIP codes in Simi Valley
- 93063
- 93065
- 93062
- 93094
- 93099