Alcalá de Henares — April 2026

Main only
1,190 Mulberry — day 6
1,113 Mulberry — day 5
1,086 Mulberry — day 3
30 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 20 (Low) 554 (Very high) 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) 0 (Low) 340 (Very high) 0 (Low) 8 (Low) 35 (Medium) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 16 (Medium) 3 5
2 15 (Low) 243 (High) 4 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 246 (Very high) 1 (Low) 4 (Low) 19 (Medium) 0 (Low) 1 (Low) 0 (Low) 8 (Low) 11 (Low) 2 1
3 11 (Low) 334 (Very high) 3 (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) 1,086 (Very high) 1 (Low) 8 (Low) 23 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 8 (Low) 2 2
4 8 (Low) 259 (High) 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) 0 (Low) 1,049 (Very high) 1 (Low) 10 (Low) 11 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 67 (High) 3 2
5 12 (Low) 393 (Very high) 3 (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) 1,113 (Very high) 1 (Low) 19 (Medium) 13 (Low) 1 (Low) 6 (Low) 0 (Low) 1 (Low) 39 (Medium) 3 2
6 35 (Medium) 514 (Very high) 2 (Low) 1 (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) 1,190 (Very high) 0 (Low) 22 (Medium) 8 (Low) 3 (Low) 5 (Low) 0 (Low) 0 (Low) 41 (Medium) 4 2
7 28 (Low) 384 (Very high) 7 (Low) 11 (Low) 3 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 701 (Very high) 0 (Low) 12 (Low) 3 (Low) 3 (Low) 294 (Very high) 5 (Low) 3 (Low) 36 (Medium) 10 34
8 13 (Low) 199 (High) 1 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 301 (Very high) 1 (Low) 8 (Low) 2 (Low) 1 (Low) 12 (Low) 1 (Low) 1 (Low) 44 (Medium) 5 5
9 12 (Low) 236 (High) 2 (Low) 1 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 396 (Very high) 1 (Low) 16 (Medium) 2 (Low) 0 (Low) 22 (Medium) 0 (Low) 1 (Low) 44 (Medium) 7 5
10 13 (Low) 270 (High) 4 (Low) 3 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 319 (Very high) 0 (Low) 14 (Low) 2 (Low) 1 (Low) 23 (Medium) 0 (Low) 6 (Low) 51 (High) 4 8
11 22 (Low) 238 (High) 5 (Low) 4 (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) 239 (Very high) 0 (Low) 9 (Low) 1 (Low) 2 (Low) 50 (High) 0 (Low) 1 (Low) 43 (Medium) 11 9
12 9 (Low) 170 (High) 2 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 226 (Very high) 1 (Low) 15 (Medium) 0 (Low) 0 (Low) 20 (Medium) 1 (Low) 2 (Low) 8 (Low) 5 9
13 8 (Low) 64 (Medium) 6 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 75 (High) 0 (Low) 21 (Medium) 0 (Low) 0 (Low) 16 (Medium) 0 (Low) 4 (Low) 8 (Low) 1 3
14 6 (Low) 52 (Medium) 6 (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) 246 (Very high) 0 (Low) 10 (Low) 1 (Low) 0 (Low) 14 (Low) 0 (Low) 4 (Low) 52 (High) 4 7
15 9 (Low) 59 (Medium) 6 (Low) 6 (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) 119 (Very high) 0 (Low) 13 (Low) 1 (Low) 0 (Low) 294 (Very high) 5 (Low) 1 (Low) 8 (Low) 13 11
16 10 (Low) 59 (Medium) 8 (Low) 6 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 236 (Very high) 1 (Low) 5 (Low) 1 (Low) 1 (Low) 70 (High) 3 (Low) 2 (Low) 19 (Medium) 8 6
17 8 (Low) 50 (Medium) 10 (Low) 13 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 294 (Very high) 1 (Low) 5 (Low) 0 (Low) 0 (Low) 121 (Very high) 5 (Low) 0 (Low) 9 (Low) 16 11
18 11 (Low) 75 (Medium) 16 (Low) 18 (Low) 6 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 300 (Very high) 0 (Low) 11 (Low) 0 (Low) 0 (Low) 401 (Very high) 5 (Low) 1 (Low) 20 (Medium) 16 15
19 18 (Low) 54 (Medium) 9 (Low) 14 (Low) 13 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 304 (Very high) 0 (Low) 18 (Medium) 1 (Low) 5 (Low) 395 (Very high) 3 (Low) 0 (Low) 25 (Medium) 15 10
20 11 (Low) 26 (Low) 12 (Low) 13 (Low) 25 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 216 (Very high) 0 (Low) 13 (Low) 0 (Low) 8 (Low) 378 (Very high) 6 (Low) 0 (Low) 11 (Low) 28 13
21 30 (Medium) 46 (Medium) 10 (Low) 18 (Low) 21 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 173 (Very high) 1 (Low) 15 (Medium) 0 (Low) 1 (Low) 541 (Very high) 5 (Low) 0 (Low) 71 (High) 31 23
22 3 (Low) 17 (Low) 16 (Low) 8 (Low) 112 (Medium) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 84 (High) 0 (Low) 5 (Low) 0 (Low) 2 (Low) 209 (Very high) 7 (Low) 0 (Low) 23 (Medium) 12 16
23 24 (Low) 39 (Medium) 14 (Low) 12 (Low) 35 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 37 (Medium) 0 (Low) 10 (Low) 1 (Low) 8 (Low) 534 (Very high) 2 (Low) 0 (Low) 154 (Very high) 27 20
24 18 (Low) 32 (Medium) 57 (Medium) 7 (Low) 325 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 259 (Very high) 1 (Low) 11 (Low) 0 (Low) 4 (Low) 322 (Very high) 11 (Low) 0 (Low) 19 (Medium) 30 23
25 44 (Medium) 23 (Low) 5 (Low) 6 (Low) 16 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 263 (Very high) 1 (Low) 25 (Medium) 0 (Low) 0 (Low) 188 (Very high) 0 (Low) 0 (Low) 5 (Low) 13 15
26 18 (Low) 22 (Low) 8 (Low) 2 (Low) 4 (Low) 2 (Low) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 295 (Very high) 0 (Low) 39 (Medium) 0 (Low) 0 (Low) 321 (Very high) 0 (Low) 0 (Low) 12 (Low) 32 11
27 18 (Low) 14 (Low) 6 (Low) 4 (Low) 9 (Low) 1 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 143 (Very high) 0 (Low) 29 (Medium) 0 (Low) 2 (Low) 488 (Very high) 2 (Low) 0 (Low) 2 (Low) 22 11
28 11 (Low) 13 (Low) 25 (Low) 12 (Low) 36 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 181 (Very high) 0 (Low) 41 (Medium) 0 (Low) 3 (Low) 473 (Very high) 4 (Low) 0 (Low) 1 (Low) 33 18
29 8 (Low) 16 (Low) 9 (Low) 7 (Low) 33 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 46 (Medium) 0 (Low) 11 (Low) 0 (Low) 0 (Low) 92 (High) 4 (Low) 0 (Low) 3 (Low) 10 18
30 4 (Low) 5 (Low) 121 (High) 11 (Low) 730 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 191 (Very high) 0 (Low) 27 (Medium) 0 (Low) 4 (Low) 33 (Medium) 6 (Low) 1 (Low) 2 (Low) 16 16