More than 30 people have been killed in the wildfires in the West this season, but a study that came out this month found that the death toll could be much higher when smoke inhalation deaths are calculated.

Using Medicare data, the researchers at Stanford’s Center on Food Security and the Environment found that dense concentrations of smoke between the beginning of August and early September contributed to some 1,200 early deaths and 4,800 additional visits to emergency rooms.

Due to the fires, southern Oregon experienced one of the most severe, prolonged poor air quality events in at least 21 years. The Bay Area was under a "Spare the Air" warning for a record 30 consecutive days between August and September as the blazes raged.

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Wildfires continue to devastate the West Coast, and while rains later this week may bring some relief, more hot, dry weather is in store for next week, again raising fire concerns in California and the West.

(MORE: Pacific Northwest to Get Much Needed Rain, But Then Another Heat Wave Moves In)

Oregon's largest wildfire, the Lionshead Fire, surpassed 312 square miles on Wednesday. The fire is currently 15% contained.

A total of 75 large wildfires are currently burning in the West, and more than half are located in California, Oregon and Washington.

The Bobcat Fire, which is burning in the San Gabriel Mountains near Mount Wilson, is one of the largest wildfires in Los Angeles County history. The blaze has been burning since Sept. 6, and is currently more than 177 square miles and 38% contained, according to InciWeb.

The August Complex has burned an astonishing 1,343 square miles and is 39% contained as of Wednesday afternoon.

Click through the slideshow above to see photos of the ongoing wildfires on the West Coast.