Cowan, California Weather
Coastal fog thickens at dawn. Day 76 of spring. Read this microseason across nine climate regions →
Cowan weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——91°56°—
- ThursdayJun 4Clear——94°58°+3°
- FridayJun 5Mostly Clear——103°59°+9°
- SaturdayJun 6Overcast——94°60°-9°
- SundayJun 7Overcast——90°50°-4°
- MondayJun 8Overcast——91°57°+1°
- TuesdayJun 9Overcast——88°61°-3°
Ozone at AQI 70 now. AQI flat over the last 6 hours (within ±3 points). With UV 8.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 83 by mid-afternoon.
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 70 now. With UV 8.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 83 by mid-afternoon.
- Present
- AQI 70
- UV peak
- 8.9 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 83
PM × Wind × Precip
PM10 at 48.9 µg/m³ (AQI 45) with a 0.36 fine-to-coarse ratio under 11 mph wind — coarse road or agricultural dust being kicked up.
- PM2.5/PM10
- 0.36
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- blown dust
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
- 5:50 AM
- Moonset
- 3:16 PM
- In sign
- ♑︎ Capricorn
Coastal fog thickens at dawn
Cowan at a glance
- Today vs. normal: 12°F above the seasonal normal for this latitude
- Last frost: April 1 (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.