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Pollen History for Houston
Daily Pollen Levels
Tree
Overall Level Very Low
Max Very Low
Grass
Overall Level Moderate
Max Moderate
Weed
Overall Level None
Max None
| Time | Tree | Grass | Weed |
|---|---|---|---|
| May 12 | Very Low | Moderate | None |
| May 11 | Very Low | Moderate | None |
| May 10 | Very Low | Moderate | None |
| May 9 | Very Low | Moderate | None |
| May 8 | Very Low | Very Low | None |
| May 7 | Very Low | Low | None |
| May 6 | Very Low | Low | None |
| May 5 | Very Low | Low | None |
| May 4 | Very Low | Moderate | None |
| May 3 | Very Low | Moderate | None |
| May 2 | Very Low | Moderate | None |
| May 1 | None | None | None |
| Apr 30 | Very Low | Low | None |
| Apr 29 | Very Low | Moderate | None |
| Apr 28 | Very Low | Moderate | None |
| Apr 27 | Very Low | Moderate | None |
| Apr 26 | Very Low | Moderate | None |
| Apr 25 | Very Low | Low | None |
| Apr 24 | Very Low | Moderate | None |
| Apr 23 | Very Low | Low | None |
| Apr 22 | Very Low | Low | None |
| Apr 21 | Very Low | Very Low | None |
| Apr 20 | Very Low | Moderate | None |
| Apr 19 | Very Low | Moderate | None |
| Apr 18 | Very Low | Low | None |
| Apr 17 | Very Low | Moderate | None |
| Apr 16 | Very Low | Moderate | None |
| Apr 15 | Very Low | Moderate | None |
| Apr 14 | Very Low | Moderate | None |
| Apr 13 | Very Low | Moderate | None |