What you should know about air quality alerts

"It's a code red day for ozone." If you hear this on your local news, what does it mean? Are you at risk? Do you know what to do? An air quality alert like this informs the public about pollution levels in the air and advises ...

After worst smog in 11 years, Mexico City braces for more

Choking smog returned to the skies of Mexico City this week at levels not seen in more than a decade, prompting fears of more eye-watering days to come as efforts to curb pollution run afoul of the courts and the realities ...

More Chinese cities issue red alerts for heavy smog

More Chinese cities are issuing their first red alerts for pollution in response to forecasts of heavy smog, after the capital, Beijing, issued two this month following criticism for not releasing them earlier.

Smog shuts schools in Bosnia's Sarajevo

Air pollution forced Bosnian authorities to shut schools in the capital Sarajevo on Thursday, while smog levels also spiked in other parts of the Balkan country due to a lack of rainfall, local officials said.

Hong Kong announces new air pollution index

Hong Kong on Friday announced a new air quality health index, the first in Asia to use the system, in its ongoing battle to combat air pollution.

page 1 from 4