As wildfires continued to blaze their way across the West—killing at least 35 people and causing up to $150 billion in damage—construction on some sites was unable to continue as the air quality index crept higher and higher.

Cal Fire said Sept. 15 that 25 deaths were attributable to the fires in California and that more than 4,200 structures had been destroyed. Wildfires have burned more than 3.2 million acres since the fires started Aug. 15. “With no significant precipitation in sight, California remains dry and ripe for wildfires,” the agency said.