Countries by air pollution (PM2.5)
A Dartle category: each answer is worth its µg/m³ of PM2.5. Name up to 3 answers that add up to exactly 100. New to the game? Read how to play.
When it was played
- Puzzle #37, November 4, 2026 · replay in the archive
The numbers
- 193 answers count.
- 6336 different ways to hit exactly 100, the shortest in 2 darts.
- 1 answer is worth more than 100 on its own, an instant bust.
How it's counted
- Average yearly exposure to fine-particle air pollution (PM2.5) in micrograms per cubic metre (2023), from the World Bank. The WHO's guideline is 5.
- No World Bank figure, so not included: Taiwan, Vatican City, Liechtenstein.
Source
World Bank World Development Indicators, as of December 31, 2023.