One of the largest wild fires in California history is still burning out of control west of Yellowstone National Park. As of this morning, it has burned 150,000 acres (25 square miles), which is about the area of Chicago and it's only 15% controlled. It's not near where we live...it's a couple of hundred miles south of us, but we also have fires burning in our area, making the air very smoky.
These are some pix I found online. The upper left photo below shows the area where the "Rim Fire" is burning. It's approaching the Hetch Hetchy Reservoir, which provides water and electricity for San Francisco.
The sign in the upper left above says, "FIRE DANGER EXTREME TODAY!"