Whittier, California Weather
Coastal fog thickens at dawn. Day 77 of spring. Read this microseason across nine climate regions →
Whittier weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Foggy——79°60°—
- FridayJun 5Foggy——77°60°-2°
- SaturdayJun 6Overcast——75°60°-2°
- SundayJun 7Mostly Clear——75°62°0°
- MondayJun 8Partly Cloudy——76°62°+1°
- TuesdayJun 9Overcast——75°63°-1°
- WednesdayJun 10Clear——76°60°+1°
PM2.5 at 24.6 µg/m³, PM10 at 34.2 µg/m³ — typical background levels with no transport signature. 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 58 now. With UV 11 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 82 by mid-afternoon.
- Present
- AQI 58
- UV peak
- 10.6 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 82
PM × Wind × Precip
PM2.5 at 24.6 µg/m³, PM10 at 34.2 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.72
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 6:05 AM
- Moonset
- 4:15 PM
- In sign
- ♒︎ Aquarius
Coastal fog thickens at dawn
Whittier at a glance
- Today vs. normal: 8°F below the seasonal normal for this latitude
- Last frost: March 11 (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.