The advisories impact large areas of Idaho, Oregon, Montana and Washington, lasting through the end of January.

The Air Quality Index measured 156 near Forks, Washington, and received a rating of "unhealthy," meaning some members of the ...

Calculating air pollution from wildfires and other events has become more complicated. That doesn’t mean it’s necessarily ...

Russian president Vladimir Putin has refused to directly engage with his counterpart Volodymyr Zelensky in any upcoming talks ...

Three active fires in Los Angeles neared full containment Sunday, as the region receives much-needed rain that has produced ...

When this vortex weakens, it can send frigid air from the Arctic southward, bringing dangerously cold temperatures to mid-latitude regions like the southern United States. In 2021, the polar ...

The states with the lowest rates of COVID-19 tests ... which also often have poor ventilation compared to open-air environments, increasing the concentration of airborne viruses.

Maps show what to expect as ... and when the jet stream allows, this cold air can drop farther down into lower latitudes like in the United States. This is forecast to happen as soon as this ...

UN Member States ... healthy air quality in the context of sustainable cities and human settlements. Also, the 2030 Agenda for Sustainable Development, which outlines a road map to achieving ...

Fires across the Los Angeles area have killed at least 25 people. The Palisades and Eaton fires continue to burn in Southern ...