Spreckels, California Weather
Coastal fog thickens at dawn. Day 77 of spring. Read this microseason across nine climate regions →
Spreckels weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Foggy——69°54°—
- FridayJun 5Overcast——77°51°+8°
- SaturdayJun 6Mostly Clear——66°49°-11°
- SundayJun 7Overcast——66°48°0°
- MondayJun 8Light Drizzle—0.05″70°49°+4°
- TuesdayJun 9Drizzle—0.06″64°55°-6°
- WednesdayJun 10Overcast——72°54°+8°
PM2.5/PM10 ratio 0.69 with 12 mph wind — characteristic of long-range haze transport rather than a local source. AQI down 11 over the last 6 hours (steady decline since this morning).
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 37 now. With UV 9.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 48 by mid-afternoon.
- Present
- AQI 37
- UV peak
- 9.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 48
PM × Wind × Precip
PM2.5/PM10 ratio 0.69 with 12 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.69
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:28 AM
- Moonset
- 4:23 PM
- In sign
- ♒︎ Aquarius
Coastal fog thickens at dawn
Spreckels at a glance
- Today vs. normal: 10°F below the seasonal normal for this latitude
- Last frost: March 27 (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 4, 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.