found that just 17 per cent of cities meet the World Health Organisation's (WHO's) air pollution guidelines. As this map reveals, 91 per cent of all countries had unsafe levels of air pollution in ...

According to the ranking in IQAir's 2024 World Air Quality Report, these are the 10 U.S. cities with the worst pollution in North America: While eight of the most polluted U.S. cities in North ...

The rate at which the planet is warming has sped up since 2010, and now researchers say that China's efforts to clean up air ...

Most of the world has dirty air, with just 17% of cities globally meeting air pollution guidelines, a report Tuesday found. Switzerland-based air quality monitoring database IQAir analyzed data ...

China is the world’s largest carbon dioxide emitter but in recent years has waged a campaign against air pollution, particularly in the cities that have fuelled its economic growth, and has ...

Chad, in central Africa, is the world’s most polluted country, while California has the worst air pollution in North America, according to an IQAir report.

The WHO has identified air pollution as the biggest environmental threat to human health globally. Each year, an estimated ...