There will be mostly sunny skies. The high will be 46°. Good air quality (0-50) Primary pollutant PM2.5 4.0 μg/m³ Pressure is the weight of the air in the atmosphere. It is normalized to the standard ...

Mt. Rainier National Park, the fifth oldest park in the U.S. national park system, is a popular destination in Washington State all year round. Located on the western slope of the Cascade Range, one ...

National parks are issuing warnings and closing some trails due to air quality. Air quality in Seattle and much of the metropolitan area was good to moderate on the Air Quality Index for most of ...