Thousands of homes in Riverside County, California, were evacuated on Sunday after the Hawarden and Eagle fires sparked, consuming more than 2,000 acres combined in less than 24 hours.

Wildfires in the region have degraded air quality for Riverside, San Bernardino, Ontario and other communities, prompting the South Coast Air Quality Management District to issue an air quality alert for fine particle pollution from wildfire smoke. Residents are being told to remain indoors as much as possible through Monday afternoon.