UV Index

Moderate

This day's UV index is moderate. Using sunscreen or other UV protection is recommended. Try to avoid direct sun exposure between 11 AM and 4 PM.

Tomorrow24 hours
ExtremeVery highHighModerateLow
LowModerate

Hourly UV and cloud cover

UV index is unitless. Cloud cover is shown as a percentage.

Peak UV 3
HourUV indexCloud cover
050%
055%
062%
067%
072%
077%
081%
085%
088%
192%
191%
291%
392%
391%
391%
289%
289%
188%
185%
080%
079%
082%
079%
082%

Quick answer — O'Fallon, MO

Moderate — O'Fallon, MO

Do I need sunscreen tomorrow in O'Fallon, MO: Moderate. This day's UV index is moderate. Using sunscreen or other UV protection is recommended. Try to avoid direct sun exposure between 11 AM and 4 PM.

Verdict
Moderate
High / Low
71° / 61°
Details
This day's UV index is moderate. Using sunscreen or other…

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