Just the way we like it the giant wildfires scorching the northwest. Two large fires in the northwest are threatening to merge. Forcing them to wear s. Fierce that lightning storms today could add... See More
Just the way we like it the giant wildfires scorching the northwest. Two large fires in the northwest are threatening to merge. Forcing them to wear s. Fierce that lightning storms today could add more fuel to the fires. Ginger zee is tracking it all. 23 large fires in six western states. All of the fires plotted here. It's been one of the driest septembers on record. From the ground, the flames rise in washington state. Leaving acres of scorched wilderness in their wake. From a distance, you can see just how huge these fires have become. The dangerous choking smoke rising up over the mountaintops. These fires have been burning for 13 days. Firefighters working around the clock to contain them. And hundreds of residents have been driven from their homes, which now stand in destruction's path. You combine all of these conditions together, yeah, I can see a perfect storm here. But the real danger lies in the smoke, smothering nearby towns. Rendering air quality so bad that people must now wear masks when outside. Officials say the air quality here is spiking over 900. I have asthma. My wife has breathing issues. Reporter: And as firefighters try to put out the 22 separate fires burning uncontrolbly, the fear that the largest two, just one mile apart, may soon merge into one giant, dangerous blaze. Not just the state of washington. Look at washington. You can see that highlighted ther that's why they're having all of those air quality issues. So the fire weather not good, some dry lightning still possible. Temperatures aren't too terrible. But red-flag warnings still in effect. Almost 8 million acres burned so far. Syrian rebels taking a big step forward in their effort to
This transcript has been automatically generated and may not be 100% accurate.