"Smoke from the fires, which have burned millions of acres across the west, has nearly reached Hawaii and Michigan"
"Four west coast cities in the US currently rank in the top 10 for worst air quality in the world, as wildfires rage up and down the western seaboard, cloaking the entire region in smoke.
Portland, Oregon, and Seattle, Washington, hold the No 1 and No 2 spots, while San Francisco and Los Angeles sit at four and six. Collectively, with the smoke from the wildfires, these four cities have knocked every city in China out of the top 10 for worst air quality.
With wildfires burning more than 3.3m acres in California, 1m acres in Oregon and more than 620,000 acres in Washington state, smoke from these blazes has nearly reached Hawaii to the west and Michigan to the east."