When does Mountain View need sun protection?

Whenever the UV index is 3 or above. In Mountain View that is every day of the year. The EPA Sun Safety action steps apply at the same threshold used worldwide.

Does Mountain View need sun protection in winter?

Usually yes. At 19.6°N, winter middays in Mountain View still commonly reach UV 3 or higher. Check today's live reading on this page before a long lunch outside.

Can you burn on a cool day in Mountain View?

Yes. UV is not heat. A cool, windy or lightly cloudy day in Mountain View can still sit at UV 3 or above, especially from spring through autumn. Temperature on this page is for context only; the UV number is what decides protection.

UV index in Mountain View today

Mountain View is a Hawaii mountain suburb at 19.6°S. Typical summer peaks of 12–14 (extreme) are no milder for being above the plains. This is tropical latitude: the UV index stays high on most days and does not take a winter off.

Live reading · data by Open-Meteo · reference monitoring by ARPANSA

Today and tomorrow in Mountain View

Peak UV, temperature and conditions for Mountain View. 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 high-country day in Mountain View can still sit at protection levels. Why you burn on cloudy days.

When Mountain View needs sun protection

Sun protection is needed in Mountain View every day of the year. Altitude lets more UV through; a cool lookout is still protection weather when the index is 3 or above.

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 Mountain View need sun protection?: Whenever the UV index is 3 or above. In Mountain View that is every day of the year. The EPA Sun Safety action steps apply at the same threshold used worldwide.
Does Mountain View need sun protection in winter?: Usually yes. At 19.6°N, winter middays in Mountain View still commonly reach UV 3 or higher. Check today's live reading on this page before a long lunch outside.
Can you burn on a cool day in Mountain View?: Yes. UV is not heat. A cool, windy or lightly cloudy day in Mountain View can still sit at UV 3 or above, especially from spring through autumn. Temperature on this page is for context only; the UV number is what decides protection.