Wildfires in Washington and Oregon have triggered evacuations as the Northwest remains the nation's busiest fire zone.

The American West is battling a persistent wildfire season, with the Pacific Northwest bearing the brunt as dozens of massive blazes rage in Oregon and Washington, forcing residents from their homes and shutting down major roadways.

Fire weather watch: Conditions are becoming favorable for dangerous wildfire spread within the next 24 to 36 hours. A combination of low humidity, dry vegetation and strong winds can turn even a small spark into a fast-moving fire. If you live in a fire-prone area, now is the time to prepare.

Heavy smoke from several large wildfires blazing in Canada and Minnesota engulfed large swaths of the Midwest and East Coast.

Hot, dry and windy conditions have fueled multiple wildfires across the Pacific Northwest. Here's where they're burning.

Evacuation orders have been issued due to the Gann Fire in Calaveras County.

An evacuation order was called late Sunday in the area of the Timber Fire, in Big Sur. Related Articles. Map: Wildfires currently burning in the United States ; Big Sur fire: Vent

This week's heat dome and Canadian wildfire smoke are creating unhealthy conditions for millions of people across the United States.

Spokane wildfires have burned over 10,000 acres, destroyed 700 structures and forced 65,000 evacuations as smoke spreads.