Previous 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/Am | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 526 | 0 | 2 | 0 | 0 | 0 | 0 | 16 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 210 | 0 | 1 | 4 | 0 | 1 | 1 | 1 | 0 | 3 | 1 | 4 |
| February | 457 | 0 | 3 | 0 | 1 | 1 | 0 | 7 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 574 | 1 | 23 | 1 | 24 | 0 | 4 | 2 | 1 | 1 | 1 | 2 |
| March | 500 | 30 | 14 | 1 | 0 | 1 | 1 | 1 | 7 | 0 | 0 | 0 | 1 | 0 | 0 | 82 | 5 | 9 | 7 | 145 | 0 | 6 | 1 | 9 | 5 | 5 | 2 |
| April | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| May | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| June | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| July | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| August | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| September | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| October | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| November | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| December | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |