mold season St. Louis
https://theworsttimeyearmoldpulse.valoradigest.com/posts/understanding-the-worst-time-of-year-for-mold-in-st.-louis-homes
Mold season in St. Louis rolls in with the humidity of late summer and sticks around through the wet, cool autumn. You can smell it in basements, see it on old window frames, and feel it in your sinuses as fallen leaves pile up and the air stays soggy. It's a gritty, real part of living here, not just a warning label.