Houston Pollen & Mold — Tuesday, July 21, 2026
Measured counts from the Houston Health Department
Pollen: Medium. Mold: Heavy.
TreesNone
0 grains/m³
GrassLow
2 grains/m³
WeedsMedium
38 grains/m³
MoldHeavy
14,458 spores/m³
This is an archived daily report. See today's Houston pollen count →