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Alcalá de Henares — 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 | 499 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 19 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 22 (Medium) | 1 (Low) | 0 (Low) | 43 (Medium) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 | 3 |
| February | 3,545 (Very high) | 0 (Low) | 11 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 84 (High) | 0 (Low) | 425 (Very high) | 9 (Low) | 436 (Very high) | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 25 (Medium) | 1 | 3 |
| March | 1,281 (Very high) | 2,876 (Very high) | 12 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 58 (High) | 0 (Low) | 0 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 1 (Low) | 4 (Low) | 3,481 (Very high) | 24 (Medium) | 24 (Medium) | 214 (Very high) | 1 (Low) | 4 (Low) | 1 (Low) | 5 (Low) | 53 (High) | 8 | 8 |
| April | 44 (Medium) | 554 (Very high) | 121 (High) | 18 (Low) | 730 (Very high) | 2 (Low) | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 1,190 (Very high) | 1 (Low) | 41 (Medium) | 35 (Medium) | 8 (Low) | 541 (Very high) | 11 (Low) | 8 (Low) | 154 (Very high) | 33 | 34 |
| May | 27 (Low) | 37 (Medium) | 223 (Very high) | 38 (Medium) | 461 (Very high) | 4 (Low) | 1 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 1 (Low) | 8 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 242 (Very high) | 0 (Low) | 161 (Very high) | 0 (Low) | 4 (Low) | 307 (Very high) | 16 (Medium) | 1 (Low) | 11 (Low) | 58 | 35 |
| June | — | — | — | 33 (Medium) | 76 (Medium) | 1 (Low) | 18 (Medium) | 0 (Low) | 0 (Low) | 0 (Low) | — | 15 (Medium) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) | 79 (High) | 0 (Low) | 85 (High) | 1 (Low) | — | 25 (Medium) | 20 (Medium) | 1 (Low) | 4 (Low) | 33 | 46 |
| July | — | — | — | 2 (Low) | 5 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | — | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | — | 1 (Low) | 1 (Low) | 0 (Low) | 3 (Low) | 17 | 16 |
| August | — | — | — | 2 (Low) | 2 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | — | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | — | 0 (Low) | 1 (Low) | 0 (Low) | 10 (Low) | 5 | 11 |
| September | — | — | — | 1 (Low) | 1 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | — | 4 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | — | 1 (Low) | 1 (Low) | 0 (Low) | 13 (Low) | 3 | 4 |
| October | — | — | — | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) | — | 1 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 3 (Low) | 0 (Low) | — | 0 (Low) | 0 (Low) | 0 (Low) | 9 (Low) | 2 | 3 |
| November | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| December | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |