Portland metro Friday weather: Air quality advisory blankets much of Pacific Northwest – OregonLive

Portland metro Friday weather: Air quality advisory blankets much of Pacific Northwest  OregonLive

Regional wildfires continue to pump smoke into the air Friday across the Pacific Northwest.

The National Weather Service has issued an air quality advisory for smoke that could last into Monday. The advisory covers most of western, southern and central Oregon and is also in effect for southwest Washington and coastal locations in both states.

Pollutants in smoke can cause burning eyes and runny noses. It can also aggravate heart and lung diseases, and other serious health problems. Residents are advised to limit outdoor activities and keep children indoors when the air is smoky. Consult with a medical professional if you have a heart or lung condition and are feeling the effects of smoke in the air.

Check here for tips on how to protect yourself from the effects of smoke and for information on how to monitor air quality in your location.

Dense smoke filled the skies over Portland early Friday. As of 4 a.m., Airnow.gov rated the air as “hazardous” for zip codes in the downtown core. You can check air quality ratings for your community at airnow.gov

Pacific Northwest air quality as of 4 a.m. Friday, Sept. 11. Courtesy of Airnow.gov

Smoked-filled skies will also affect Friday’s temperatures. Locations with heavy smoke cover could stay cooler as the sun is blocked for longer periods. Forecast temperatures at the Portland Airport are expected to reach around 80 degrees. Some locations in the Willamette Valley stayed in the upper 60s to low 70s Thursday under smoke-filled skies.

Onshore flow begins to make its way into the valleys this weekend. This should help clear out some of the smoke, and also return temperatures closer to average for this time of year.

Most areas west of the Cascades should see thinning smoke by Saturday and some return to clearing skies. Saturday’s high temperature in Portland should reach near 83 degrees.

Sunday is likely to start with some high marine clouds. Skies may be partly sunny by the afternoon, and the high will be about 77 degrees.

Extended forecasts are looking at the possibility of rain for Monday night and Tuesday.