UV Index for Hayward, CA

Current Hayward UV Index

0.3 (Low)

Last Updated 25 minutes ago

Hourly Hayward UV Index

The hourly Hayward, CA UV Index forecast for Thursday, July 3rd, 2025.

5 Day Hourly Hayward UV Index Forecast

Last Updated 20 hours ago

The UV index forecast for the next five days in Hayward, CA has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in Hayward over the next five days will be 9.8 on Saturday, July 5th at 1:00 pm.

The UV index forecast for Thursday, July 3rd in Hayward, CA is below.

Time UV Index Risk
8am 1.2
Low
9am 2.8
Low
10am 4.6
Moderate
11am 6.8
High
12pm 7.9
High
1pm 9
Very High
2pm 8.6
Very High
3pm 6.9
High
4pm 4.8
Moderate
5pm 2.6
Low
6pm 1.4
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, July 4th in Hayward, 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 0.3
Low
8am 1.1
Low
9am 2.6
Low
10am 4.7
Moderate
11am 7
High
12pm 8.8
Very High
1pm 9.6
Very High
2pm 9.2
Very High
3pm 7.7
High
4pm 5.5
Moderate
5pm 3.3
Moderate
6pm 1.5
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 5th in Hayward, 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 0.2
Low
8am 0.9
Low
9am 2.2
Low
10am 4.4
Moderate
11am 6.9
High
12pm 9.1
Very High
1pm 9.8
Very High
2pm 9.2
Very High
3pm 7.6
High
4pm 5.3
Moderate
5pm 3.3
Moderate
6pm 1.5
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, July 6th in Hayward, 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