Overall Overview
Total pollen was unchanged, holding steady at 8. In contrast, total mold increased sharply by 3,994, driven by large gains in several dominant mold categories.
Tree, Grass, and Weed Pollen
- Tree pollen was flat overall, with Cedar down by 2 and Other Tree up by 2, resulting in no net change.
- Grass pollen remained at zero.
- Weed pollen remained at zero across all species.
Mold Spores
- The increase in total mold was primarily driven by Ascomycetes (+3,311) and Cladosporium (+964), which together accounted for the majority of the overall rise.
- Alternaria increased by 26, and Cercospora increased by 68, adding to upward pressure.
- Offsetting these gains were declines in Basidiomycetes (-195) and Penicillium/Aspergillus (-158).
- Several smaller categories dropped to zero, including Algae (-12), Nigrospora (-6), Rust (-12), and Spegazzinia (-4).
Key Takeaways
- Pollen conditions were stable, with no net change across tree, grass, or weed categories.
- Mold levels rose substantially, led by a surge in Ascomycetes and Cladosporium.
- Declines were concentrated in secondary mold groups and were not sufficient to offset the major increases.
Table of Absolute Changes
| Category | Species | Absolute Change |
|---|---|---|
| Mold | Ascomycetes | +3,311 |
| Mold | Cladosporium | +964 |
| Mold | Cercospora | +68 |
| Mold | Alternaria | +26 |
| Mold | Basidiomycetes | -195 |
| Mold | Penicillium/Aspergillus | -158 |
| Mold | Algae | -12 |
| Tree | Cedar | -2 |
| Tree | Other Tree | +2 |
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