Saint Johns, Arizona, United States UV Index Forecast

Find the UV Index forecast for today, tomorrow and the next 15 days for Saint Johns, Arizona, United States, The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated hourly.

Current UV Index
5:40 am

Low1

UV INDEX

Hourly UV Index Forecast for Today
July 17, 2025

1
6 am
2
7 am
4
8 am
6
9 am
8
10 am
9
11 am
9
12 pm
7
1 pm
5
2 pm
5
3 pm
4
4 pm
4
5 pm
2
6 pm
  • Low
    1-2
  • Moderate
    3-4-5
  • High
    6-7
  • Very High
    8-9-10
  • Xtreme
    11+

As of 5:40 am today in Saint Johns, Arizona, United States, the UV Index is currently at a Low level of 1.

Summary of Hourly UV Index Forecast for Today and Tomorrow in Saint Johns, Arizona, United States.

Today

Time Range UV Index Risk
6 am 1
Low
7 am 2
Low
8 am 4
Moderate
9 am 6
High
10 am 8
Very High
11 am 9
Very High
12 pm 9
Very High
1 pm 7
High
2 pm 5
Moderate
3 pm 5
Moderate
4 pm 4
Moderate
5 pm 4
Moderate
6 pm 2
Low

Tomorrow

Time Range UV Index Risk
6 am 1
Low
7 am 2
Low
8 am 4
Moderate
9 am 6
High
10 am 7
High
11 am 8
Very High
12 pm 8
Very High
1 pm 8
Very High
2 pm 8
Very High
3 pm 6
High
4 pm 5
Moderate
5 pm 4
Moderate
6 pm 3
Moderate

Daily Saint Johns UV Index Forecast for the next 15 days:

9
17 Jul
8
18 Jul
6
19 Jul
6
20 Jul
5
21 Jul
9
22 Jul
10
23 Jul
8
24 Jul
10
25 Jul
8
26 Jul
9
27 Jul
10
28 Jul
8
29 Jul
10
30 Jul
  • Low
    1-2
  • Moderate
    3-4-5
  • High
    6-7
  • Very High
    8-9-10
  • Xtreme
    11+

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