Big Bear Lake, California Weather
Coastal fog thickens at dawn. Day 77 of spring. Read this microseason across nine climate regions →
Big Bear Lake weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Clear——77°48°—
- ThursdayJun 4Clear——77°57°0°
- FridayJun 5Mostly Clear——76°58°-1°
- SaturdayJun 6Overcast——74°54°-2°
- SundayJun 7Clear——71°51°-3°
- MondayJun 8Clear——74°52°+3°
- TuesdayJun 9Clear——71°49°-3°
Ozone at AQI 110 now. AQI up 27 in the last 6 hours — air quality is degrading. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 26 by mid-afternoon.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion, especially during the projected peak around 6 AM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 110 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 26 by mid-afternoon.
- Present
- AQI 110
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 26
PM × Wind × Precip
PM2.5/PM10 ratio 0.65 with 7 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.65
- Wind
- light
- 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
- 6:01 AM
- Moonset
- 4:10 PM
- In sign
- ♑︎ Capricorn
Coastal fog thickens at dawn
Big Bear Lake at a glance
- Today vs. normal: 21°F below the seasonal normal for this latitude
- Last frost: March 12 (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.