El Paso had the ninth-most polluted air among major U.S. cities in 2024, according to one global report released Tuesday – and that was before a series of intense dust storms last week created some of the worst air quality conditions ever recorded in the city.

India saw a seven per cent decline in PM2.5 levels in 2024, but six of the world's ten most polluted cities were still in the country, according to the IQAir 2024 World Air Quality Report. India's annual PM2.