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Las Rozas — 2026
| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Amaranth | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 474 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 13 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 34 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 4 (Low) | 1 | 2 |
| February | 995 (Very high) | 0 (Low) | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 53 (High) | 2 (Low) | 22 (Medium) | 1 (Low) | 55 (High) | 0 (Low) | 2 (Low) | 0 (Low) | 8 (Low) | 6 (Low) | 1 | 2 |
| March | 300 (Very high) | 1,801 (Very high) | 6 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 6 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 17 (Medium) | 7 (Low) | 9 (Low) | 4 (Low) | 102 (Very high) | 1 (Low) | 9 (Low) | 1 (Low) | 3 (Low) | 10 (Low) | 8 | 2 |
| April | 7 (Low) | 346 (Very high) | 49 (Medium) | 4 (Low) | 149 (Medium) | 2 (Low) | 0 (Low) | 1 (Low) | 375 (Very high) | 0 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 87 (High) | 2 (Low) | 94 (High) | 2 (Low) | 3 (Low) | 1,397 (Very high) | 5 (Low) | 4 (Low) | 20 (Medium) | 84 | 6 |
| May | 6 (Low) | 3 (Low) | 104 (High) | 15 (Low) | 144 (Medium) | 0 (Low) | 11 (Low) | 0 (Low) | 34 (Medium) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 3 (Low) | 250 (Very high) | 0 (Low) | 2 (Low) | 335 (Very high) | 8 (Low) | 0 (Low) | 2 (Low) | 51 | 5 |
| June | — | — | — | 11 (Low) | 29 (Low) | 1 (Low) | 13 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | — | 3 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 30 (Medium) | 0 (Low) | — | 35 (Medium) | 9 (Low) | 3 (Low) | 3 (Low) | 15 | 4 |
| July | — | — | — | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | — | 11 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 4 | 2 |
| August | — | — | — | 1 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | — | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | — | 5 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 3 | 2 |
| September | — | — | — | 2 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | — | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | — | 5 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 | 1 |
| October | — | — | — | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 3 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | — | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 0 |
| November | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| December | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |