By Umair Irfan

21 August 2018(Vox) – Ash and smoke are choking Seattle’s air for the second week in a row, as wildfires smolder in the Cascades and in British Columbia.As of Tuesday morning, the Air Quality Index in Seattle was at 181, a rating classified as “unhealthy.” In parts of the city, the index rose as high as 220, which is “very unhealthy.” Other parts of Puget Sound, like Port Angeles, Washington — 80 miles from Seattle — saw the AQI rise to 205.To put it in perspective, an AQI of 150 is roughly equal to smoking seven cigarettes in a day. That means residents should avoid being outside and exerting themselves, particularly people with heart and lung problems, the elderly, and children.The air quality in Seattle this week has been worse than in Beijing, one of the world’s most notoriously polluted cities. The flames from some of the massive wildfires that have raged from Alaska to New Mexico have destroyed homes and taken lives, but the smoke and ash in the air are one of the most insidious threats to health. Since nearly 2 million acres have burned in the United States this year from 109 fires in 12 states ranging from Alaska to New Mexico, many regions are affected.Wildfires have ignited in the Pacific Northwest before, but usually Seattle’s weather quenches flames and clears smoke pretty quickly.That the region has remained so hot and dry this year, allowing smoke to linger, is highly unusual, Andrew Wineke, a spokesperson for the state Ecology Department’s air quality program, told Q13 Fox. But it also happened last year. “The trend is clear. You see the number of forest fires increasing, and so there’s going to be wildfires,” Wineke said. “There’s going to be smoke. It’s going to be somewhere.” [more]