Piru, California Weather
Coastal fog thickens at dawn. Day 76 of spring. Read this microseason across nine climate regions →
Piru weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Foggy——85°57°—
- ThursdayJun 4Clear——88°58°+3°
- FridayJun 5Overcast——90°58°+2°
- SaturdayJun 6Overcast——84°58°-6°
- SundayJun 7Mostly Clear——78°55°-6°
- MondayJun 8Overcast——76°54°-2°
- TuesdayJun 9Partly Cloudy——76°57°0°
PM2.5/PM10 ratio 0.52 with 14 mph wind — characteristic of long-range haze transport rather than a local source. AQI flat over the last 6 hours (within ±3 points).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 48. Overcast through the UV peak window (cloud cover ~67%) — afternoon ozone should stay flat.
- Present
- AQI 48
- UV peak
- 8.5 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 27
PM × Wind × Precip
PM2.5/PM10 ratio 0.52 with 14 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.52
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- transport
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).
The higher the clouds, the finer the weather.
- Moonrise
- 5:31 AM
- Moonset
- 3:17 PM
- In sign
- ♑︎ Capricorn
Coastal fog thickens at dawn
Piru at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: March 13 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 3, 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.