Overall Overview
Total pollen increased by 38, rising from 124 to 162. The increase was driven entirely by tree pollen, which more than offset declines in grass and weed pollen.
Total mold decreased by 665, despite notable increases in Cladosporium and several minor species.
Tree, Grass, and Weed Pollen
Tree Pollen (+50)
Primary contributors:
- Carya (Hickory/Pecan) +22
- Quercus (Oak) +18
- Pinaceae (Pine) +10
- Other Tree +4
- Celtis (Hackberry) +2
Offsetting declines:
- Cupressaceae (Cedar) −4
- Morus (Mulberry) −2
Grass Pollen (−6)
- Grass total declined by 6.
Weed Pollen (−6)
Drivers:
- Other Weed −10
- Plantago (Plantain) +2
- Chenopodiaceae/Amaranthaceae (Amaranth) +2
Mold Spores
Total mold decreased by 665.
Largest decreases:
- Ascomycetes −571
- Basidiomycetes −434
- Cercospora −54
- Rust −14
Largest increases:
- Cladosporium +218
- Smuts/Myxomycete +106
- Alternaria +48
- Curvularia +14
- Tetraploa +16
Smaller increases were observed across several minor genera but did not offset declines in Ascomycetes and Basidiomycetes.
Key Takeaways
- Tree pollen drove the overall pollen increase, led by Hickory/Pecan and Oak.
- Grass and weed pollen both declined modestly.
- Mold counts fell overall, as substantial declines in Ascomycetes and Basidiomycetes outweighed increases in Cladosporium and Smuts/Myxomycete.
- Cladosporium rose meaningfully but was not enough to reverse the broader mold decline.
Table of Absolute Changes
| Category | Species | Change |
|---|---|---|
| Tree | Carya (Hickory/Pecan) | +22 |
| Tree | Quercus (Oak) | +18 |
| Mold | Ascomycetes | −571 |
| Mold | Basidiomycetes | −434 |
| Mold | Cladosporium | +218 |
| Mold | Smuts/Myxomycete | +106 |
| Mold | Alternaria | +48 |
| Weed | Other Weed | −10 |
| Tree | Pinaceae (Pine) | +10 |
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