mold season St. Louis 18
https://mygatewaywatermolddaily.solsticebrief.com/posts/when-mold-is-at-its-worst-in-st.-louis-homes-insights-from-gateway-water-mold
Mold season in St. Louis hits hardest in late summer and early fall, when humidity spikes and leaves start piling up. The damp, muggy air settles into basements and crawl spaces, and you can smell it—that earthy, musty odor that means spores are thriving. It's a real problem for anyone with allergies, making the transition from summer to autumn feel less crisp and more congested. Keeping the dehumidifier running and raking leaves before they rot is pretty much a necessity here.