UV Index for Marathon, FL

Current Marathon UV Index

1.4 (Low)

Last Updated 27 minutes ago

Hourly Marathon UV Index

The hourly Marathon, FL UV Index forecast for Tuesday, July 15th, 2025.

5 Day Hourly Marathon UV Index Forecast

Last Updated 2 hours ago

The UV index forecast for the next five days in Marathon, FL has 2 days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Marathon over the next five days will be 12 on Friday, July 18th at 1:00 pm.

The UV index forecast for Tuesday, July 15th in Marathon, FL is below.

Time UV Index Risk
5pm 1.6
Low
6pm 1
Low
7pm 0.4
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, July 16th in Marathon, FL 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 0.9
Low
10am 1.6
Low
11am 2
Low
12pm 2.8
Low
1pm 3
Moderate
2pm 3.2
Moderate
3pm 2.9
Low
4pm 2.4
Low
5pm 1.5
Low
6pm 0.8
Low
7pm 0.3
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, July 17th in Marathon, FL 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 1.6
Low
10am 3.9
Moderate
11am 6.7
High
12pm 9.6
Very High
1pm 11.1
Extreme
2pm 11.2
Extreme
3pm 9.8
Very High
4pm 6.8
High
5pm 3.7
Moderate
6pm 1.5
Low
7pm 0.4
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, July 18th in Marathon, FL 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 1.9
Low
10am 4.3
Moderate
11am 7.3
High
12pm 10.3
Very High
1pm 12
Extreme
2pm 11.5
Extreme
3pm 10
Very High
4pm 7.3
High
5pm 4.2
Moderate
6pm 1.8
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, July 19th in Marathon, FL 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