Houston Pollen & Mold — Monday, May 18, 2026
Measured counts from the Houston Health Department
Pollen: Medium. Mold: Low.
TreesLow
2 grains/m³
GrassMedium
6 grains/m³
WeedsMedium
20 grains/m³
MoldLow
3,151 spores/m³
This is an archived daily report. See today's Houston pollen count →