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Pollen History for Houston
Daily Pollen Levels
Tree
Overall Level Very Low
Max Very Low
Grass
Overall Level Low
Max Moderate
Weed
Overall Level Very Low
Max Low
Compared to last year
Tree
Tree pollen is similar to the same period last year
Grass
Grass pollen is 47% lower than the same period last year
Weed
Weed pollen is 11% lower than the same period last year
| Time | Tree | Grass | Weed |
|---|---|---|---|
| Sep 10 | Very Low | Moderate | Very Low |
| Sep 9 | Very Low | Low | Very Low |
| Sep 8 | Very Low | Moderate | Low |
| Sep 7 | Very Low | Moderate | Very Low |
| Sep 6 | Very Low | Low | Very Low |
| Sep 5 | Very Low | Low | Very Low |
| Sep 4 | Very Low | Low | Very Low |
| Sep 3 | Very Low | Low | Very Low |
| Sep 2 | Very Low | Very Low | Very Low |
| Sep 1 | Very Low | Low | Very Low |
| Aug 31 | Very Low | Low | Very Low |
| Aug 30 | Very Low | Low | Very Low |
| Aug 29 | Very Low | Low | Very Low |
| Aug 28 | Very Low | Low | Very Low |
| Aug 27 | Very Low | Low | Very Low |
| Aug 26 | Very Low | Low | Very Low |
| Aug 25 | Very Low | Low | Very Low |
| Aug 24 | Very Low | Low | Very Low |
| Aug 23 | Very Low | Low | Very Low |
| Aug 22 | Very Low | Very Low | Very Low |
| Aug 21 | Very Low | Very Low | Very Low |
| Aug 20 | None | Very Low | Very Low |
| Aug 19 | None | Very Low | Very Low |
| Aug 18 | None | Very Low | Very Low |
| Aug 17 | None | Very Low | Very Low |
| Aug 16 | None | Very Low | Very Low |
| Aug 15 | None | Very Low | Very Low |
| Aug 14 | None | Very Low | Very Low |
| Aug 13 | None | None | Very Low |
| Aug 12 | None | None | Very Low |