It’s a bit of déjà vu for area residents, as the region bounced along a color-coded scale earlier this month. Western Pennsylvania saw ratings as high as red, with increased health concerns from those with preexisting respiratory conditions and a warning to others to limit outdoor activity. An orange alert means the air is considered unhealthy for sensitive groups. Unhealthy air quality was detected in the Pittsburgh region as of 9 a.m. on Wednesday. Of concern are the fine particulates — AKA PM-2.5 — contained in pollutants including wildfire smoke and which can include hundreds of chemicals. Head to the link in bio to read more. ✍️: Hanna Webster 📸: Benjamin B. Braun/Post-Gazette