Thousands of residents in Southern California were under air quality alerts on Friday, with authorities warning those in ...

"Air quality can vary by hour and location depending on wind conditions," said an air pollution control agency.

More than 500,000 people in parts of Georgia and South Carolina were advised to keep their windows shut on Wednesday, after ...

As we count down the days to spring, many of us are looking forward to warmer weather. However, when temperatures rise, the ...