A strong Bering Sea storm will continue to impact the Aleutian Islands and parts of southwestern Alaska through Friday. High Wind Warnings have been issued for the entire Aleutian Island chain. Across the Great Basin and northern Rockies, strong winds and dry conditions will lead to critical fire weather conditions Friday as a strong Pacific system moves inland. Read More >
Seattle, WA
Center Weather Service Unit
Note that the Air Quality Index (AQI) here is not an official forecast, except for the EPA AirNow Widget to the right. The AQI below (not EPA AirNow) is based on the most recent observation via MesoWest for the specified time, and not a time-average, so the AQI values will be more variable than other official sites such as AirNow. Many sites only report some of the pollutants used in this calculation (O₃, PM₂.₅, PM₁₀, NO₂, SO₂, CO), and the AQI equations used are based on those from AirNow. The nearby Air Quality Index table is based on the AQI values near the longitude/latitude for the station indicated. On the map, hover/click the site to see the values for the individual pollutants. To manually enter a station ID not listed, change the URL to include "&id=____&", where ____ is the desired station ID. To manually enter a lat/lon pair, include "<=___&ln=___&" in the URL, where the ___ are the lat/lon values. | ||
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Seattle, WA
3101 Auburn Way South
Auburn, WA 98092
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