Houston Pollen & Mold — Wednesday, September 23, 2026
Measured counts from the Houston Health Department
Pollen: Heavy. Mold: Medium.
TreesNone
0 grains/m³
GrassLow
4 grains/m³
WeedsHeavy
90 grains/m³
MoldMedium
8,410 spores/m³
This is an archived daily report. See today's Houston pollen count →