Houston Health Department
Pollen and Mold: Wednesday, September 20, 2023
Houston pollen and mold count — All counts below are in cubic meter air
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| 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) | 52 |
| Juglans (Walnut) | 0 | ||
| Liquidamber (Sweet Gum) | 0 | Other Tree Pollen/Unknown | 0 |
| The Major Weed Pollen Counted: | |||
| Ambrosia (Ragweed) | 44 |
Plantago (Plantain) | 0 |
| Artemeisia (Sage) | 2 |
Rumex (Sheep Sorel) | 0 |
| Asteraceae (Aster) | 0 | Typha (Cattail) | 0 |
| Amaranthaceae (Amaranth) | 4 |
Urticaceae (Nettle) | 2 |
| Cyperaceae (Sedge) | 0 |
Other Weed Pollen | 6 |
| The Major Mold Spores Counted: | |||
| Algae | 0 |
Oidium/Erysiphe | 0 |
| Alternaria | 376 |
Penicillium/Aspergillus | 558 |
| Ascospores | 2,174 | Periconia | 28 |
| Basidiospores | 1,488 | Pithomyces | 22 |
| Cercospora | 382 | Rusts | 4 |
| Cladosporium | 10,588 | Smuts/Myxomycetes | 48 |
| Curvularia | 905 | Spegazzinia | 4 |
| Dreshslera/Helminthosporium | 91 |
Stemphilium | 6 |
| Epicoccum | 8 | Tetraploa | 6 |
| Nigrospora | 1,275 | Torula | 8 |
| *The next Pollen and Mold Spore Count report will be on Thursday, September 21, 2023* | |||
| 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. |