Places / Joshua Tree National Park, California
UV index in Joshua Tree National Park, California
Check another placeLoading today’s UV…
- Low 0 to 2
- Moderate 3 to 5
- High 6 to 7
- Very high 8 to 10
- Extreme 11+
Hour-by-hour numbers
| Time | UV index | Level |
|---|
The next few days
Each day’s UV curve and peak, drawn on the same scale so you can compare. The forecast reaches roughly four days ahead.
What to do today
About Joshua Tree National Park
This forecast point is near Hidden Valley inside Joshua Tree National Park. The park spans different elevations, and scattered trees and boulders do not provide continuous trail shade.
When to check the UV here
Plan the UV and heat parts of the day separately. A lower index later in the afternoon can coincide with warm conditions, while a cool morning can still develop a strong midday curve.
Planning your time outside
Bring your own covering and identify sheltered breaks where possible. Check National Park Service weather and trail guidance before heading onto an exposed route.
How to read this forecast
The chart loads hourly model data from currentuvindex.com for 33.991, -116.1637. Times are local to this forecast point. Open Hour-by-hour numbers for the values, or compare the next few days below the main chart.
The forecast describes UV for the area, not the dose on your skin. Buildings, trees, cloud and reflective surfaces can change your exposure. It does not measure a particular beach chair, trail or street.
What time does UV drop below 3?
Read the descending side of today’s curve, then check that the later hours remain below 3. The time changes with the date and weather. See how to find the afternoon drop instead of using a fixed clock time.
What should I bring?
Plan sun protection when the forecast reaches 3 or higher. Shade, covering, a hat, sunglasses and sunscreen work together. At very high UV, arrange outdoor time around the peak rather than relying on sunscreen alone.
Nearby or similar forecasts
Related guides
Sources and local information
UV forecasts are model estimates and can differ from conditions on the ground. Live data requires JavaScript and a connection to the provider; no typical UV values are substituted if it fails. Page updated October 15, 2026. See how the data works.