Lewiston, California Weather
Coastal fog thickens at dawn. Day 77 of spring. Read this microseason across nine climate regions →
Lewiston weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Clear——84°50°—
- FridayJun 5Overcast——81°56°-3°
- SaturdayJun 6Overcast——78°43°-3°
- SundayJun 7Overcast——75°40°-3°
- MondayJun 8Light Showers35%0.61″50°46°-25°
- TuesdayJun 9Heavy Drizzle29%0.06″70°46°+20°
- WednesdayJun 10Clear——86°43°+16°
Ozone at AQI 500 now. AQI up 8 over the last 6 hours (gradual rise). With UV 9.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 649 by mid-afternoon.
AVOID OUTDOORS Avoid outdoor exertion. Keep windows closed; use HEPA filtration indoors if available.
What's driving it
Ozone × UV × Sky
Ozone at AQI 500 now. With UV 9.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 649 by mid-afternoon.
- Present
- AQI 500
- UV peak
- 9.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 649
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
- 6:46 AM
- Moonset
- 4:16 PM
- In sign
- ♒︎ Aquarius
Coastal fog thickens at dawn
Lewiston at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: April 20 (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.