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Collado Villalba — 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 | 526 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 16 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 210 (Very high) | 0 (Low) | 1 (Low) | 4 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 1 | 4 |
| February | 457 (Very high) | 0 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 574 (Very high) | 1 (Low) | 23 (Medium) | 1 (Low) | 24 (Medium) | 0 (Low) | 4 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 1 | 2 |
| March | 500 (Very high) | 32 (Medium) | 14 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 7 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 82 (High) | 5 (Low) | 9 (Low) | 7 (Low) | 145 (Very high) | 1 (Low) | 6 (Low) | 1 (Low) | 9 (Low) | 5 (Low) | 5 | 2 |
| April | 11 (Low) | 229 (High) | 9 (Low) | 4 (Low) | 6 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 366 (Very high) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 3 (Low) | 37 (Medium) | 1 (Low) | 138 (Very high) | 7 (Low) | 1 (Low) | 676 (Very high) | 2 (Low) | 2 (Low) | 5 (Low) | 64 | 2 |
| May | 5 (Low) | 0 (Low) | 65 (Medium) | 31 (Medium) | 63 (Medium) | 1 (Low) | 18 (Medium) | 0 (Low) | 35 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 115 (Very high) | 0 (Low) | 2 (Low) | 362 (Very high) | 9 (Low) | 1 (Low) | 5 (Low) | 65 | 4 |
| June | — | — | — | 15 (Low) | 18 (Low) | 0 (Low) | 8 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | — | 5 (Low) | 2 (Low) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 48 (Medium) | 0 (Low) | — | 43 (Medium) | 5 (Low) | 1 (Low) | 4 (Low) | 8 | 3 |
| July | — | — | — | 2 (Low) | 3 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 2 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 7 (Low) | 0 (Low) | — | 17 (Medium) | 1 (Low) | 0 (Low) | 2 (Low) | 4 | 2 |
| August | — | — | — | 2 (Low) | 3 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 2 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 6 (Low) | 0 (Low) | — | 13 (Low) | 1 (Low) | 1 (Low) | 2 (Low) | 2 | 1 |
| September | — | — | — | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | — | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | — | 5 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 1 | 1 |
| October | — | — | — | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | — | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 | 0 |
| November | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| December | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |