Cities in California, Texas and Arizona are expecting air quality to become unhealthy for sensitive groups on Thursday.

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 ...

Air quality alerts are in effect across several regions in South Carolina, North Carolina and California because of elevated ...

Wondering what the air quality is like in your neighborhood? This interactive map gives you up-to-the-minute air quality updates and health recommendations for communities across Los Angeles ...