Barstow, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Barstow weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——97°73°—
- MondayJul 6Clear——99°72°+2°
- TuesdayJul 7Clear——104°70°+5°
- WednesdayJul 8Clear——106°71°+2°
- ThursdayJul 9Clear——108°72°+2°
- FridayJul 10Overcast——106°74°-2°
- SaturdayJul 11Overcast——105°72°-1°
AQI 30 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 6.1 µg/m³ (AQI 34), ratio 0.56 with 6 mph wind — characteristic of long-range haze transport rather than a local source.
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 30 now. With UV 12 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 34 around 1 PM.
- Present
- AQI 30
- UV peak
- 12.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 34
PM × Wind × Precip
PM2.5 at 6.1 µg/m³ (AQI 34), ratio 0.56 with 6 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.56
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:04 PM
- Moonset
- 11:07 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Barstow at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: March 16 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 92311
16-Day Forecast — Barstow
- Sun97°73°1%
- Mon99°72°1%
- Tue104°70°0%
- Wed106°71°0%
- Thu108°72°0%
- Fri106°74°1%
- Sat105°72°1%
- Sun98°75°4%
- Mon101°72°9%
- Tue102°77°15%
- Wed101°78°8%
- Thu105°80°16%
- Fri101°83°20%
- Sat100°84°6%
- Sun105°79°6%
- Mon106°82°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 Barstow
- 92311