UV Index for Palo Alto, CA

Current Palo Alto UV Index

0.8 (Low)

Last Updated 9 minutes ago

Hourly Palo Alto UV Index

The hourly Palo Alto, CA UV Index forecast for Sunday, February 22nd, 2026.

5 Day Hourly Palo Alto UV Index Forecast

Last Updated 6 hours ago

The UV index forecast for the next five days in Palo Alto, CA has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Palo Alto over the next five days will be 4.4 on Wednesday, February 25th at 12:00 pm.

The UV index forecast for Sunday, February 22nd in Palo Alto, CA is below.

Time UV Index Risk
5pm 0.2
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, February 23rd in Palo Alto, CA is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.5
Low
9am 1.4
Low
10am 2.8
Low
11am 4
Moderate
12pm 4.2
Moderate
1pm 4.1
Moderate
2pm 2.9
Low
3pm 1.7
Low
4pm 0.7
Low
5pm 0.1
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, February 24th in Palo Alto, CA is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.1
Low
9am 0.3
Low
10am 0.5
Low
11am 0.8
Low
12pm 0.6
Low
1pm 0.4
Low
2pm 0.3
Low
3pm 0.1
Low
4pm 0.1
Low
5pm 0
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, February 25th in Palo Alto, CA is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0
Low
8am 0.3
Low
9am 0.7
Low
10am 1.8
Low
11am 3.4
Moderate
12pm 4.4
Moderate
1pm 4.4
Moderate
2pm 3.7
Moderate
3pm 2.1
Low
4pm 0.8
Low
5pm 0.2
Low
6pm 0
Low
7pm 0
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, February 26th in Palo Alto, CA is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low