Houston Pollen & Mold — Thursday, September 18, 2025
Measured counts from the Houston Health Department
Pollen: Heavy. Mold: Heavy.
TreesLow
10 grains/m³
GrassLow
4 grains/m³
WeedsHeavy
92 grains/m³
MoldHeavy
15,122 spores/m³
This is an archived daily report. See today's Houston pollen count →