Alta Sierra, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Alta Sierra weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Partly Cloudy——73°56°—
- MondayJul 6Partly Cloudy——75°55°+2°
- TuesdayJul 7Clear——83°52°+8°
- WednesdayJul 8Clear——83°52°0°
- ThursdayJul 9Clear——87°56°+4°
- FridayJul 10Clear——90°58°+3°
- SaturdayJul 11Overcast——91°61°+1°
AQI 39 (Good), driven by PM2.5. AQI up 6 over the last 6 hours (gradual rise). PM10 at 28.5 µg/m³ (AQI 26) with a 0.40 fine-to-coarse ratio under 11 mph wind — coarse road or agricultural dust being kicked up.
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 42 now. With UV 11 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 64 around 1 PM.
- Present
- AQI 42
- UV peak
- 11.4 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 64
PM × Wind × Precip
PM10 at 28.5 µg/m³ (AQI 26) with a 0.40 fine-to-coarse ratio under 11 mph wind — coarse road or agricultural dust being kicked up.
- PM2.5/PM10
- 0.40
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:11 PM
- Moonset
- 11:12 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Alta Sierra at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: March 21 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Alta Sierra
- Sun73°56°1%
- Mon75°55°1%
- Tue83°52°0%
- Wed83°52°0%
- Thu87°56°0%
- Fri90°58°0%
- Sat91°61°1%
- Sun78°55°3%
- Mon84°54°7%
- Tue87°60°11%
- Wed89°63°5%
- Thu91°62°10%
- Fri94°63°13%
- Sat91°63°6%
- Sun89°61°6%
- Mon89°59°6%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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.
ZIP codes in Alta Sierra
- 93285