全球逾9成人口 吸髒空氣

  The World Health Organization said on April 5th that 99% of the global population breathes poor air quality. The 2021 air quality standard report collected pollution data of 6,475 cities in 117 countries between 2010 and 2019.
  The agency’s update on global air quality comes about six months after tightening its air quality guidelines, calling for more action to reduce fossil fuel use.
  Air quality is the poorest in the eastern Mediterranean and Southeast Asia regions, followed by Africa. Less than 1% of cities in low and middle-income countries met the recommended thresholds while 17% of cities in high-income countries fell below WHO’s guidelines. The database previously measured two types of particulate matter, PM2.5 and PM10, but for the first time the latest survey included nitrogen dioxide ground measurements.

 世界衛生組織四月五日表示,全球百分之九十九人口呼吸的空氣品質不符標準。世衛二○ 二一年空氣品質標準報告,收集了二○一○到二○一九年,一百一十七個國家共六千四百七十五個城市的空汙數據。
 東地中海國家和東南亞地區的空氣品質最差 ,其次是非洲。低收入和中等收入國家中只有不到百分之一城市,達到了世衛建議的標準,而高收入國家中百分之十七的城市,低於世衛組織的指南。該數據之前測量了兩種懸浮微粒PM2.5 和 PM10,但這次調查則首次包括二氧化氮的地面測量數據。