Vista, California

Moderate

3.9

UV Index · Now

Hat & SPF.

A hat and SPF 30 are enough for most people.

Unprotected

51 min

until skin starts to burn.

With SPF 30

25 hr 38 min

Average unprotected skin. Lighter skin burns faster, darker skin slower.

HeatComfortable

Air

19°

Feels like

19°

Humidity

52%

Questions about Vista today

What is the UV index in Vista right now?
The UV index in Vista, California is 3.9 — categorised as Moderate. A hat and SPF 30 are enough for most people.
Is it safe to go outside in Vista today?
Yes — UV is moderate (3.9) in Vista right now. A hat and SPF 30 are enough for most people.
How long does it take to get sunburn in Vista?
Average unprotected skin starts to burn in roughly 51 min at the current UV index of 3.9 in Vista. SPF 30 multiplies that window by about 30×. Lighter skin burns faster; darker skin burns more slowly.
What does the heat feel like in Vista today?
Air temperature is 19°C with 52% humidity, giving a "feels like" reading of 19°C — comfortable.
When is the safest time to step outside in Vista?
UV is highest between 11 am and 4 pm. Early mornings (before 9 am) and late afternoons (after 5 pm) are the safest windows for unprotected skin in Vista, especially through summer.
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Data: Open-Meteo · Cities: GeoNames (CC-BY 4.0) · Updated Tue 10:00 AM · Refreshes every 30 minutes