Houston Pollen & Mold — Friday, March 20, 2026
Measured counts from the Houston Health Department
Pollen: Extremely heavy. Mold: Low.
TreesExtremely heavy
1,876 grains/m³
GrassMedium
8 grains/m³
WeedsNone
0 grains/m³
MoldLow
3,660 spores/m³
This is an archived daily report. See today's Houston pollen count →