The Greenest Country on Earth Isn't the One You'd Guess

Estonia — not Norway or Iceland — tops Yale's Environmental Performance Index of 180 nations, while only 13 of 143 places on Earth still breathe WHO-safe air.

The top 3

  1. Clean Air Is Now Rare: Only 13 of 143 Places Pass the WHO Test: IQAir's 2025 World Air Quality Report found 91% of countries exceed the WHO annual PM2.5 limit of 5 µg/m³ — just 13 jurisdictions, mostly islands, still qualify.
  2. The 100% Club: Grids That Already Run on Renewables: Iceland generates essentially 100% renewable electricity, with Costa Rica and Norway both near 99% — fully green power grids already exist.
  3. Yale's Green Report Card: Estonia Beats 179 Countries: The 2024 Environmental Performance Index grades 180 nations on 58 indicators — Estonia is No. 1 with 75.7, and the entire top 10 is European.

Sources

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