UV index and sunburn time in Mexico
Peak UV index and how quickly unprotected skin burns, for 8 cities in Mexico.
| City | Peak UV | Category | Month | Burns after |
|---|---|---|---|---|
| Mexico City | 16.4 | Extreme | August | 14 min |
| Tijuana | 11.5 | Extreme | July | 20 min |
| Iztapalapa | 16.5 | Extreme | August | 14 min |
| Puebla | 16.5 | Extreme | August | 14 min |
| Ecatepec de Morelos | 16.5 | Extreme | August | 14 min |
| Santiago de Querétaro | 15.7 | Extreme | August | 15 min |
| León de los Aldama | 15.5 | Extreme | August | 15 min |
| Ciudad Juárez | 12.3 | Extreme | July | 19 min |
The same UV also drives vitamin D synthesis — and stops entirely for part of the year at higher latitudes. Vitamin D winters in Mexico →
Burn times are for skin type III with no sunscreen. How these are calculated