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At 10pm ET, the city briefly had the worst air quality among major metropolitan areas worldwide, and currently surpasses Doha and Baghdad while trailing behind Delhi and Lahore.
This list contains the top 500 cities by PM2.5 annual mean concentration measurement as documented by the World Health Organization covering the period from 2010 to 2022. The January 2024 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 5,390 towns and cities in 63 countries.
Delhi overtook Pakistan’s Lahore as the world’s most polluted city in Swiss group IQAir’s live rankings, with an air quality index (AQI) score of more than 1,000, which is considered ...
People living in the Midwest and Northeast were warned of a worsening air quality index throughout the week due to smoke from the Canadian wildfires
The World Health Organization's recommended limit is 5 micrograms per cubic meter, although there are also various national guideline values, which are often much higher. Air pollution is among the biggest health problems of modern industrial society and is responsible for more than 10 percent of all deaths worldwide (nearly 4.5 million ...
South Korea has the worst air quality of the 35 richest countries in the world that are part of the OECD. Without the pollution coming from China, South Korea would be below the OECD average. [ 1 ] According to the 2019 World Air Quality Report AirVisual, South Korea’s annual average ultrafine dust concentration in 2018 was 24.9µg/m³, which ...
However, the number of bad air quality days in these five counties has been steadily declining. For instance, Kern County cut its unhealthy air days from 207 days in 2004 to just 70 in 2023.
A view toward the Chrysler Building from the Empire State Building amid the six-day smog of November 1953, estimated to have caused at least 200 deaths. [14]Even before the 1966 smog episode, scientists, city officials, and the general public recognized that New York City—and most other major American cities—had serious air-pollution problems. [15]