UV index in Lake Almanor West today
Lake Almanor West sits on the water in California at 40.2°S. Lake glare works like a beach: UV from above and off the surface, with summer middays typically 8–10 (very high). This is cool-temperate America: summer UV still climbs into the very high band, and spring arrives before the weather feels hot.
Live reading · data by Open-Meteo · reference monitoring by ARPANSA
Today and tomorrow in Lake Almanor West
Peak UV, temperature and conditions for Lake Almanor West. Tomorrow’s peak is the number to plan around if you’re heading out in the middle of the day.
Weather conditions right now
Cloud and rain cut heat more than they cut UV. A partly cloudy lakeside day in Lake Almanor West can still sit at protection levels. Why you burn on cloudy days.
When Lake Almanor West needs sun protection
Sun protection is needed in Lake Almanor West typically from May through September, and any clear spring or fall day UV reaches 3. Lake glare adds a second dose on top of the sky reading, the same way a beach does.
The threshold, per SunSmart and ARPANSA: whenever UV reaches 3 or above, Slip on covering clothing, Slop on SPF 50+ sunscreen, Slap on a hat, Seek shade and Slide on sunglasses. Read the full sun safety guide.
The UV scale at a glance
- 0–2Low
- 3–5Moderate
- 6–7High
- 8–10Very high
- 11+Extreme
Frequently asked questions
- When does Lake Almanor West need sun protection?
- Whenever the UV index is 3 or above. In Lake Almanor West that is typically from May through September, and any clear spring or fall day UV reaches 3. The EPA Sun Safety action steps apply at the same threshold used worldwide.
- Does Lake Almanor West need sun protection in winter?
- Not every day. Midwinter middays in Lake Almanor West often sit below UV 3, but clear late-winter and early-spring days cross the threshold before summer fully arrives. Check the live index.
- Does the water make UV worse in Lake Almanor West?
- It can. The lake surface reflect ultraviolet, so skin that is not covered (including under the chin and on the tops of feet) picks up extra dose on top of the direct sun. The live UV index on this page is the sky reading; reflection is on top of that.