Houston Pollen & Mold — Tuesday, April 21, 2026
Measured counts from the Houston Health Department
Pollen: Heavy. Mold: Low.
TreesHeavy
90 grains/m³
GrassNone
0 grains/m³
WeedsMedium
14 grains/m³
MoldLow
5,749 spores/m³
This is an archived daily report. See today's Houston pollen count →