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Las Rozas — 2026
| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 474 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| February | 995 (Very high) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) |
| March | 300 (Very high) | 1,801 (Very high) | 6 (Low) | 2 (Low) | 0 (Low) |
| April | 7 (Low) | 346 (Very high) | 49 (Medium) | 4 (Low) | 149 (Medium) |
| May | 6 (Low) | 3 (Low) | 104 (High) | 15 (Low) | 144 (Medium) |
| June | — | — | — | 11 (Low) | 29 (Low) |
| July | — | — | — | 2 (Low) | 3 (Low) |
| August | — | — | — | 1 (Low) | 3 (Low) |
| September | — | — | — | 2 (Low) | 2 (Low) |
| October | — | — | — | 0 (Low) | 1 (Low) |
| November | — | — | — | — | — |
| December | — | — | — | — | — |