Alcalá de Henares — February 2026

Main only
3,545 Cypress/Yew — day 22
3,239 Cypress/Yew — day 24
2,659 Cypress/Yew — day 16
28 Days measured
Daily pollen level evolution
Day 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
1 5 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 2
2 224 (Very high) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (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) 0 (Low) 0 (Low) 1 (Low) 0 1
3 31 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 1 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 0
4 18 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (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) 0 (Low) 0 (Low) 1 (Low) 0 1
5 455 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 11 (Low) 0 (Low) 5 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 4 (Low) 0 0
6 608 (Very high) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 8 (Low) 0 (Low) 3 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 0
7 38 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 9 (Low) 0 (Low) 1 (Low) 9 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 1
8 62 (Medium) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 9 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 9 (Low) 0 (Low) 9 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 1 1
9 20 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 3 (Low) 0 (Low) 2 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 0
10 591 (Very high) 0 (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) 0 (Low) 10 (Low) 0 (Low) 14 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 1
11 1,827 (Very high) 0 (Low) 4 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 50 (High) 0 (Low) 119 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 1
12 1,029 (Very high) 0 (Low) 9 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 84 (High) 0 (Low) 184 (Very high) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 11 (Low) 0 1
13 610 (Very high) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 22 (Medium) 0 (Low) 93 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 4 (Low) 0 1
14 135 (High) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 6 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 47 (Medium) 0 (Low) 143 (Very high) 1 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 3
15 33 (Medium) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 48 (Medium) 0 (Low) 167 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 4 (Low) 1 0
16 2,659 (Very high) 0 (Low) 11 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 4 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 39 (Medium) 0 (Low) 288 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 12 (Low) 0 2
17 2,606 (Very high) 0 (Low) 6 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 52 (High) 0 (Low) 383 (Very high) 1 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 16 (Medium) 0 1
18 1,946 (Very high) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 16 (Medium) 0 (Low) 307 (Very high) 1 (Low) 4 (Low) 0 (Low) 0 (Low) 1 (Low) 1 (Low) 18 (Medium) 0 0
19 123 (High) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 73 (High) 0 (Low) 115 (Very high) 1 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 2
20 134 (High) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 36 (Medium) 0 (Low) 134 (Very high) 0 (Low) 11 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 1 1
21 1,326 (Very high) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 14 (Low) 0 (Low) 355 (Very high) 0 (Low) 30 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 16 (Medium) 0 1
22 3,545 (Very high) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 34 (Medium) 0 (Low) 425 (Very high) 1 (Low) 139 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 16 (Medium) 0 0
23 2,210 (Very high) 0 (Low) 6 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 47 (Medium) 0 (Low) 395 (Very high) 0 (Low) 177 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 16 (Medium) 0 1
24 3,239 (Very high) 0 (Low) 3 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 3 (Low) 0 (Low) 314 (Very high) 1 (Low) 343 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 12 (Low) 0 1
25 2,465 (Very high) 0 (Low) 4 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 126 (Very high) 0 (Low) 402 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 21 (Medium) 0 0
26 1,975 (Very high) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 61 (High) 0 (Low) 310 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 11 (Low) 1 0
27 2,498 (Very high) 0 (Low) 6 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 22 (Medium) 0 (Low) 66 (High) 1 (Low) 436 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 25 (Medium) 1 0
28 2,063 (Very high) 0 (Low) 8 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 1 (Low) 0 (Low) 20 (Medium) 0 (Low) 56 (High) 0 (Low) 265 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 24 (Medium) 1 1