Houston Pollen & Mold — Tuesday, March 17, 2026
Measured counts from the Houston Health Department
Pollen: Heavy. Mold: Low.
TreesHeavy
936 grains/m³
GrassLow
4 grains/m³
WeedsLow
4 grains/m³
MoldLow
5,035 spores/m³
This is an archived daily report. See today's Houston pollen count →