0 (Low)
Last Updated 59 minutes ago
The hourly Upper Merion, PA UV Index forecast for Wednesday, September 17th, 2025.
Last Updated 11 hours ago
The UV index forecast for the next five days in Upper Merion, PA has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in Upper Merion over the next five days will be 6.4 on Thursday, September 18th at 1:00 pm.
The UV index forecast for Wednesday, September 17th in Upper Merion, PA is below.
Time | UV Index | Risk |
---|---|---|
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 | 0.6 |
Low |
11am | 1 |
Low |
12pm | 1.6 |
Low |
1pm | 1.6 |
Low |
2pm | 1.1 |
Low |
3pm | 0.7 |
Low |
4pm | 0.4 |
Low |
5pm | 0.2 |
Low |
6pm | 0.1 |
Low |
7pm | 0 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Thursday, September 18th in Upper Merion, PA 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 | 0.2 |
Low |
9am | 0.8 |
Low |
10am | 1.6 |
Low |
11am | 3 |
Moderate |
12pm | 5.8 |
Moderate |
1pm | 6.4 |
High |
2pm | 5.9 |
Moderate |
3pm | 4.5 |
Moderate |
4pm | 2.8 |
Low |
5pm | 1.3 |
Low |
6pm | 0.4 |
Low |
7pm | 0 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Friday, September 19th in Upper Merion, PA 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 | 1.2 |
Low |
10am | 2.6 |
Low |
11am | 4.3 |
Moderate |
12pm | 5.7 |
Moderate |
1pm | 6.2 |
High |
2pm | 5.7 |
Moderate |
3pm | 4.4 |
Moderate |
4pm | 2.7 |
Low |
5pm | 1.2 |
Low |
6pm | 0.4 |
Low |
7pm | 0 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Saturday, September 20th in Upper Merion, PA 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 |