Cities in California made up six of the 10 cities with the worst air quality, including the three worst. People of color were disproportionately exposed to air pollution: The report found 63% of ...

Toxic smoke and dangerous particulate pollution are spreading far beyond the flames, leaving air quality at unhealthy levels ...

Bangkok’s air quality took a nosedive today, earning it the grim title of the fourth worst city in the world for air ...