UV Research & Data

Original analyses of computed UV data for the 500 largest US cities, plus reference statistics with primary sources. Free to cite with attribution.

Data Study · July 2026

The US Cities Where You Burn Fastest: 2026 UV Rankings

The 500 largest US cities ranked by computed clear-sky summer peak UV — fair skin can burn in about 8 minutes in the fastest, and in 168 cities the peak reaches "extreme." Includes the full dataset as a CSV download.

Reference · Updated July 2026

UV Index Statistics & Facts

Skin cancer incidence, sunburn risk, how altitude and reflection change your exposure, and sunscreen effectiveness — every figure cited to WHO, CDC, ACS, AAD, or the Skin Cancer Foundation.

For Journalists & Researchers

Our data is free to use with attribution to UV Index Checker and a link. For custom data cuts (state-level rankings, specific city comparisons, seasonal breakdowns) or comment, email [email protected] — our methods are documented on the Data & Methodology page.