Records for particle pollution were just smashed across the Washington region. Many were first topped Wednesday and then surpassed Thursday as thick smoke drifting in from Canada peaked. Code Red conditions were widespread both days, and many locations on Thursday even hit the Code Purple and Maroon categories, the two highest levels on the Air Quality Index (AQI) scale.
The D.C. region just saw its worst smoke pollution on record
June 12, 2023
