New York City
you can see the buildings and they are a lot further than 100 yds away....
its not unusual for our air to be so smoke filled, you can see anything but a "smoke wall" 100 yds or less away from you, but when its not there, there is entire mountain sides that 3000 to 5000 ft high right in front of you, in all directions as far as you can see.
Pictures like this represent the "GOOD DAYS" during fire season.