Joshua Tree, California Weather
August begins in scorching stillness. Day 43 of summer. Read this microseason across nine climate regions →
Joshua Tree weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayAug 2Clear——105°81°—
- MondayAug 3Clear——105°81°0°
- TuesdayAug 4Mostly Clear——103°79°-2°
- WednesdayAug 5Clear——101°75°-2°
- ThursdayAug 6Clear——101°80°0°
- FridayAug 7Clear——102°76°+1°
- SaturdayAug 8Partly Cloudy——104°79°+2°
AQI 38 (Good), driven by PM2.5. AQI down 5 over the last 6 hours (gradual decline). PM2.5 at 10.2 µg/m³, PM10 at 32.0 µg/m³ — typical background levels with no transport signature.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 32 now. With UV 1.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 8.
- Present
- AQI 32
- UV peak
- 1.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 8
PM × Wind × Precip
PM2.5 at 10.2 µg/m³, PM10 at 32.0 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.32
- Wind
- calm
- 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).
Red sky at night, sailor's delight.
- Moonrise
- 9:30 PM
- Moonset
- 9:54 AM
- In sign
- ♓︎ Pisces
August begins in scorching stillness
Joshua Tree at a glance
- Today vs. normal: 21°F above the seasonal normal for this latitude
- Last frost: March 12 (climatological average for this latitude)
- Microseason: Aug 1–5
- Planting window: Sow fall peas. Start kale and collard seedlings for fall.
ZIP code: 92252
16-Day Forecast — Joshua Tree
- Sun105°81°1%
- Mon105°81°1%
- Tue103°79°0%
- Wed101°75°1%
- Thu101°80°3%
- Fri102°76°5%
- Sat104°79°9%
- Sun102°78°4%
- Mon98°75°4%
- Tue99°76°6%
- Wed97°77°6%
- Thu98°76°6%
- Fri96°76°13%
- Sat99°77°13%
- Sun101°77°10%
- Mon103°76°6%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of August 2, 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.
Sun & seasons in Joshua Tree
Joshua Tree sits in San Bernardino County, where the year’s longest day runs 14h 26m of daylight and its shortest just 9h 52m — a swing of +4h 33m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Los Angeles, the state’s largest city, lies about 120 miles to the W. The nearest town Joshua Tree tracks is Indio, roughly 27 miles to the S.
Air quality in Joshua Tree’s county has trended cleaner since 2020; its cleanest year on record was 2023 (median AQI 71). See the full air-quality history for Joshua Tree.
ZIP codes in Joshua Tree
- 92252