A new study ranks Oklahoma City and Tulsa among the unhealthiest of America's 100 largest cities. Learn more about the ranking.

Chicago and Houston brace for thunderstorms and rainfall, with Chicago facing elevated flood risks and damaging winds. Los ...

Dhaka has long been grappling with air pollution issues. Its air quality usually turns unhealthy in winter and improves during the monsoon ...

The India Meteorological Department has forecast thunderstorms with rain and the maximum temperature expected to settle ...

The Minnesota Pollution Control Agency  has issued an air quality alert for all of Minnesota. The alert takes effect 9 a.m.

MINNEAPOLIS (FOX 9) - An air quality alert has been issued for all of Minnesota starting Sunday due to wildfire smoke from ...

MANKATO, Minn. (KEYC) - Another air quality alert has been issued for Minnesota due to Canadian wildfire smoke.

Air quality in New York City continues to pose health risks for the community, as elevated ozone pollution has prompted officials to declare an air quality alert for ...

The hazy air hovering over U.S. metropolises, including Chicago and New York, this summer is reminding Americans of just how connected they are with their northern neighbor, regardless of how ...

Heat and humidity are both high Friday. Rounds of storms on Saturday. As expected, the wildfire smoke has finally dissipated ...

Though wildfire smoke was to blame for poor air quality earlier in the week, Wednesday and Thursday's alerts are due to high ...

A study compares the data that went into the maps from federal monitoring stations, low-cost sensors and satellites that ...