Its Air Quality Index (AQI) stood at a staggering 160, signifying unhealthy air conditions, while PM2.5 levels reached 68.4 µg/m³—over 13 times the World Health Organization's (WHO ...
This is sort of a unique situation where we have a lot of ash down at levels where people live that could pose a health issue and won’t show up on our AQI map,” said Dr. Scott Epstein ...