The poster shows the full WHO UV scale from 0 to 11+ with the color code used by weather services worldwide, the protection advice for each band, and the three rules children remember best: shirt, shade, sunscreen. It prints cleanly on A4 or A3, in color or grayscale, and pairs well with the live classroom display — hang it next to the screen so pupils can match today’s number to the scale themselves.
How strong is the sun today?
The UV index tells you — check it each morning at uvindex.now
1–2
LowPlay outside — you're good! No special protection needed.
3–5
ModerateHat on for recess. Sunscreen for long outdoor time.
6–7
HighHat + sunscreen + shade around midday.
8–10
Very highShade at lunch. Unprotected skin can burn in under 20 minutes.
11+
ExtremeStay in the shade — protect every minute outside.
Three things to remember: ① UV is invisible — you can't feel it, so check the number. ② Clouds don't stop it — up to 80% gets through. ③ From UV 3: hat + sunscreen, every time.
uvindex.now — live UV index for 420+ cities · free classroom resources at uvindex.now/education