Thousands of firefighters battle the argest wildfire in California this year.

🔥 Wildfires across the western United States and Canada put millions of people under air quality alerts on Sunday as thousands of firefighters battled the flames, including the largest wildfire in California this year. 🔥 The so-called "#ParkFire" burned more than 142,000 hectares as of Saturday evening, making it the seventh-largest in California history.