1.6K views · 59 reactions | Wildfire season is cranking up, and smoke...

WATCH: Canadian wildfire smoke is spilling southward into the United States & will continue to do so into the weekend within a general north-south upper air flow. For those under this smoke plume, hazy skies will become more noticeable with more vibrant sunrises & sunsets ahead. | Meteorologist Eric Snitil

A study from Harvard T.H. Chan School of Public Health has found that particulate air pollution smaller than 2.5 micrometers (PM2.5) from wildfire smoke might have contributed to thousands of excess COVID-19 cases and deaths in Washington, Oregon, and California during the 2020 wildfire season. PM2.5 is already linked to a myriad of respiratory illnesses, including asthma, COPD, and premature death. Researchers built a model that compared wildfire smoke and air pollution data with coronavirus in