UV Index Today

Real-time solar radiation monitoring

Cupertino, California, United States
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Cupertino

California, United States • Local time: 18:16

Live UV Index
18:00
1.8
Low
Peak 7.0 at 14:00

Temp

35.3°C
Sunny

Status

Sunny

Max

37.1°C

Next 3 Hours

0.6
19:00
0.1
20:00
0.0
21:00

Humidity

20%

Cloud

4%

Wind Spd

12.6km/h

"Low risk. Minimal protection needed."

Today's UV Forecast

Hourly prediction for Cupertino · Peak 7.0 at 14:00

—
00
—
01
—
02
—
03
—
04
—
05
—
06
—
07
0.4
08
1.6
09
3.2
10
4.9
11
5.8
12
6.7
13
7.0
14
6.5
15
5.3
16
3.6
17
1.8
18
0.6
19
0.1
20
—
21
—
22
—
23

Sunburn time at UV 1.8

Estimate for Cupertino based on your skin type. Estimates only — not medical advice.

Skin type (Fitzpatrick)

Unprotected

56 min

Type II · no sunscreen

Recommended

SPF 15+

UV is low, but fair skin still benefits from light protection for longer outings.

With SPF 15+

12+ hours

Theoretical window — apply enough and reapply every 2 hours

Quick take: Moderate unprotected window — still use SPF for midday outdoor time.

Open full calculator with SPF options

Location Map

37.3121, -122.0445 · Elev. 93 m · America/Los_Angeles

Open in Google Maps

Today's UV outlook for Cupertino

Today's forecast for Cupertino peaks at UV 7.0 around 14:00. The hourly outlook shows 8 hours at moderate or above (UV 3+), 3 hours at high or above (UV 6+). The live reading is UV 1.8 right now.

Peak UV reaches the high band today. Plan longer outdoor sessions earlier or later if you can, and use the calculator below to see how long unprotected skin may last at the current reading.

Compare with other cities in California, or read practical planning notes in the blog .