Health officials warn of smoke risks that build up

Health officials warn of smoke risks that build up

As much of Central Oregon burns, Sisters Country is experiencing another round of periodically smoky skies. Public health officials are renewing warnings about a pollutant that’s easy to see but harder to fully appreciate: fine particulate matter, 2.5 PPM (parts per million), a seemingly small but potentially deadly amount found in wildfire smoke. These microscopic particles, found in wildfire smo...