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The EPA has given the state of Idaho notice that a corner of the Idaho panhandle isn't meeting stricter new air quality standards. The agency intends to...

Wildfire smoke continued to collect in the Rogue Valley air Sunday, sending air quality readings into the Very Unhealthy range for the first time since...

Oregon is set to receive more than $1 million in grant funding from the Environmental Protection Agency aimed at reducing air pollution in disadvantaged communities.

Climate change is making it harder to meet clean air goals, says the 25th annual State of the Air report from the American Lung Association.

In polluted Pittsburgh, a new device from a local university helps residents assess indoor air. It's not the only monitor on the market — but is the only one available to borrow from a public library.

The Portland company Precision Castparts met Wednesday night with a group of neighbors concerned about air pollution from the company.

Poor air quality is continuing in much of Oregon and southwest Washington, but more rain in the forecast could improve that.

Southeast Portland air near a manufacturing plant run by Precision Castparts is polluted with unhealthy levels of the heavy metals nickel, hexavalent chromium and arsenic, according to the latest batch of air monitoring data.

The Ukrainian defense minister is demanding more Patriot air defense batteries from allies to help Ukraine fend off Russian aerial attacks.

The scope of the scandal has grown sharply. Now, nearly 20 percent of the 500 officers in the nuclear weapons corps are implicated. The secretary of the Air Force says there are "systemic problems" in a command that has control over nuclear missiles.