AhaBulb: Stuff Everyone Should Know · ahabulb.com/uv-index-three
At what UV Index should you start protecting your skin?
3 or higher.
- 3 or higher ✔
- Only at 8+
- Only in summer
Why: UV rays can damage skin even on cool or cloudy days.
Huh, didn't know that: Snow and water can reflect UV rays.
What does the sun eat for breakfast? Light toast.
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References
Answer: 3 or higher. UV rays can damage skin even on cool or cloudy days.
- CDC: Sun Safety Facts www.cdc.gov/skin-cancer/sun-safety/index.html
When the UV index is 3 or higher in your area, protect your skin from too much exposure to the sun.
Checked 2026-10-09.
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