Why extreme heat makes air quality worse
More than 100 million US citizens have been put under air quality warnings, with millions more facing extreme heatwave alerts. Here’s how heatwaves make air pollution worse.
With Canadian wildfires continuing to rage to the North, many US cities are facing combined threats from air pollution and extreme heatwaves. The wildfire smoke itself is certainly not good, but heatwaves also play a direct role in worsening air quality - it involves the creation of a pollutant that we usually think of as a good thing.
Scripted and presented by Cherry Stewart-Czerkas
Edited by Tom Heyden
Image Research by Richard Sankey
Additional Footage: Getty Images, Reuters & BBC News
