The lab is connected to the Mauna Loa Observatory, where scientists gather data to produce the Keeling Curve, a chart on the daily status of atmospheric carbon dioxide concentrations.

Dangerous weather conditions will peak Saturday, with one of the most prolific tornado-producing setups in years expected to ...

A huge storm system crossing the U.S. threatens to unleash tornadoes Friday in the Mississippi Valley, blizzards in the ...

During fire season, the National Weather Service deploys meteorologists to major wildfires to keep firefighters updated on changing wind conditions and to predict where the fire will spread.

Senate Majority Leader John Thune (R-S.D.) said Thursday that Republicans are open to giving Democrats an amendment vote on a ...

In Washington, the eastern parts of the state may provide the best views of tonight's lunar eclipse. See expected cloud cover percentages for the nation.

The year’s rainfall at Seattle-Tacoma International Airport is 6.46 inches, which is 4.75 inches below normal, according to the National Weather Service.

Federal cutbacks are threatening the Pacific Northwest’s ability to manage its water supplies and keep people safe from ...

March's full moon, the Worm Moon, is extra special this year. But Washington residents may face cloudy skies that could affect the striking view.

Canada and the European Union quickly unveil retialatory levies against the U.S., hours after Trump's sweeping tariffs on steel and aluminum.