Houston Health Department
Pollen and Mold: Tuesday, September 21, 2021
Houston pollen and mold count — All counts below are in cubic meter air
 TREE POLLEN EXTREMELY HEAVY 4,171 |
WEED POLLEN MEDIUM 40 |
GRASS POLLEN MEDIUM 12 |
MOLD SPORES MEDIUM 7,360 |
| The Major Tree Pollen Counted: | |||
| Acer (Maple) | 0 |
Morus (Mulberry) | 0 |
| Alnus (Alder) | 0 | Pinaceae (Pine) | 0 |
| Betula (Birch) | 0 | Platanus (Sycamore) | 0 |
| Carya (Hickory, Pecan) | 0 |
Populus (Cottonwood) | 0 |
| Celtis (Hackberry) | 0 |
Quercus (Oak) | 0 |
| Corylus (Hazelnut) | 0 | Salix (Willow) | 0 |
| Cupressaceae (Cedar) | 0 | Tilia (Linden) | 0 |
| Fraxinus (Ash) | 0 | Ulmus (Elm) | 4,171 |
| Juglans (Walnut) | 0 | ||
| Liquidamber (Sweet Gum) | 0 | Other Tree Pollen/Unknown | 0 |
| The Major Weed Pollen Counted: | |||
| Ambrosia (Ragweed) | 24 |
Plantago (Plantain) | 0 |
| Artemeisia (Sage) | 2 | Rumex (Sheep Sorel) | 0 |
| Asteraceae (Aster) | 0 | Typha (Cattail) | 0 |
| Amaranthaceae (Amaranth) | 4 |
Urticaceae (Nettle) | 0 |
| Cyperaceae(Sedge) | 6 |
Other Weed Pollen | 4 |
| The Major Mold Spores Counted: | |||
| Algae | 0 | Oidium/Erysiphe | 4 |
| Alternaria | 22 |
Penicillium/Aspergillus | 271 |
| Ascospores | 3,798 | Periconia | 8 |
| Basidiospores | 1,409 | Pithomyces | 10 |
| Cercospora | 140 |
Rusts | 2 |
| Cladosporium | 1,454 | Smuts/Myxomycetes | 69 |
| Curvularia | 111 |
Spegazzinia | 0 |
| Dreshslera/Helminthosporium | 14 |
Stemphilium | 2 |
| Epicoccum | 0 |
Tetraploa | 4 |
| Nigrospora | 40 | Torula | 2 |
| *The next Pollen and Mold Spore Count report will be on Wednesday, September 21, 2021* | |||
| Recorded message is available at 713-247-5846. Information about air quality is available by calling 832-393-5612. |
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| For additional information, email to: pollen.mold@houstontx.gov or call 832-393-3920. | |||
| We are a pollen and mold count AAAAI-certified station. |