Multiple Philadelphia fire trucks are on the scene of a four-alarm blaze at an apartment building in West Philadelphia early Saturday morning.The building is on the corner of 48th and Locust streets.

A four-alarm fire at an abandoned four-story West Philadelphia apartment building put firefighters to the test as hot spots were doused, new ones leapt from the building.

Firefighters are working to put out a massive fire that has heavily damaged an apartment building in West Philadelphia.

Smoke from Canadian wildfires is engulfing much of the eastern and central United States and and is expected to continue for days.

The U.S. Environmental Protection Agency warns that wildfire smoke contains dangerous pollutants in the form of fine particles known as PM 2.5 that can penetrate deep into the lungs and enter the bloodstream. Short-term exposure can lead to bronchitis, worsen asthma and create other health issues.