Alcalá de Henares — May 2026

Main only
461 Olive — day 2
351 Olive — day 19
331 Olive — day 20
31 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 17 (Low) 11 (Low) 65 (Medium) 12 (Low) 197 (Medium) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 125 (Very high) 0 (Low) 38 (Medium) 0 (Low) 4 (Low) 307 (Very high) 3 (Low) 0 (Low) 2 (Low) 27 15
2 15 (Low) 13 (Low) 44 (Medium) 12 (Low) 461 (Very high) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 51 (High) 0 (Low) 18 (Medium) 0 (Low) 1 (Low) 161 (Very high) 5 (Low) 0 (Low) 1 (Low) 19 11
3 1 (Low) 9 (Low) 155 (Very high) 9 (Low) 280 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 6 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 163 (Very high) 0 (Low) 43 (Medium) 0 (Low) 3 (Low) 27 (Medium) 8 (Low) 0 (Low) 9 (Low) 25 12
4 12 (Low) 6 (Low) 164 (Very high) 28 (Medium) 213 (High) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 126 (Very high) 0 (Low) 23 (Medium) 0 (Low) 1 (Low) 138 (Very high) 13 (Low) 0 (Low) 11 (Low) 26 15
5 4 (Low) 5 (Low) 19 (Low) 6 (Low) 40 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 169 (Very high) 0 (Low) 27 (Medium) 0 (Low) 0 (Low) 146 (Very high) 6 (Low) 0 (Low) 5 (Low) 8 16
6 2 (Low) 10 (Low) 19 (Low) 5 (Low) 16 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 225 (Very high) 0 (Low) 12 (Low) 0 (Low) 0 (Low) 52 (High) 1 (Low) 0 (Low) 4 (Low) 12 11
7 4 (Low) 9 (Low) 25 (Low) 4 (Low) 93 (Medium) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 51 (High) 0 (Low) 6 (Low) 0 (Low) 4 (Low) 94 (High) 2 (Low) 0 (Low) 1 (Low) 30 5
8 1 (Low) 4 (Low) 40 (Medium) 4 (Low) 129 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 61 (High) 0 (Low) 11 (Low) 0 (Low) 1 (Low) 27 (Medium) 3 (Low) 0 (Low) 4 (Low) 13 9
9 6 (Low) 10 (Low) 11 (Low) 3 (Low) 102 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 93 (High) 0 (Low) 14 (Low) 0 (Low) 1 (Low) 27 (Medium) 1 (Low) 0 (Low) 1 (Low) 9 24
10 1 (Low) 2 (Low) 2 (Low) 1 (Low) 18 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 4 (Low) 0 (Low) 0 (Low) 0 (Low) 4 5
11 1 (Low) 1 (Low) 112 (High) 4 (Low) 143 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 3 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 90 (High) 0 (Low) 5 (Low) 0 (Low) 1 (Low) 4 (Low) 2 (Low) 0 (Low) 1 (Low) 6 6
12 2 (Low) 5 (Low) 63 (Medium) 8 (Low) 60 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 80 (High) 0 (Low) 12 (Low) 0 (Low) 0 (Low) 15 (Medium) 3 (Low) 0 (Low) 0 (Low) 17 11
13 2 (Low) 3 (Low) 11 (Low) 4 (Low) 12 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 8 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 154 (Very high) 0 (Low) 19 (Medium) 0 (Low) 1 (Low) 44 (Medium) 5 (Low) 0 (Low) 0 (Low) 13 9
14 4 (Low) 0 (Low) 33 (Medium) 10 (Low) 51 (Medium) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 149 (Very high) 0 (Low) 42 (Medium) 0 (Low) 1 (Low) 94 (High) 4 (Low) 0 (Low) 2 (Low) 19 19
15 4 (Low) 37 (Medium) 20 (Low) 15 (Low) 21 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 163 (Very high) 0 (Low) 24 (Medium) 0 (Low) 0 (Low) 53 (High) 3 (Low) 0 (Low) 2 (Low) 17 25
16 10 (Low) 5 (Low) 37 (Medium) 9 (Low) 12 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 175 (Very high) 0 (Low) 15 (Medium) 0 (Low) 0 (Low) 13 (Low) 5 (Low) 0 (Low) 0 (Low) 10 13
17 6 (Low) 5 (Low) 60 (Medium) 9 (Low) 43 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 167 (Very high) 0 (Low) 16 (Medium) 0 (Low) 2 (Low) 42 (Medium) 6 (Low) 1 (Low) 0 (Low) 20 8
18 6 (Low) 2 (Low) 223 (Very high) 29 (Medium) 233 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 6 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 217 (Very high) 0 (Low) 7 (Low) 0 (Low) 1 (Low) 32 (Medium) 11 (Low) 0 (Low) 2 (Low) 23 15
19 7 (Low) 4 (Low) 208 (Very high) 27 (Medium) 351 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 149 (Very high) 0 (Low) 4 (Low) 0 (Low) 4 (Low) 32 (Medium) 16 (Medium) 0 (Low) 4 (Low) 26 15
20 6 (Low) 4 (Low) 164 (Very high) 30 (Medium) 331 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 242 (Very high) 0 (Low) 12 (Low) 0 (Low) 4 (Low) 72 (High) 7 (Low) 0 (Low) 2 (Low) 21 20
21 13 (Low) 2 (Low) 88 (High) 17 (Low) 222 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 136 (Very high) 0 (Low) 6 (Low) 0 (Low) 4 (Low) 53 (High) 2 (Low) 0 (Low) 3 (Low) 35 35
22 27 (Low) 0 (Low) 110 (High) 31 (Medium) 209 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 209 (Very high) 0 (Low) 25 (Medium) 0 (Low) 4 (Low) 102 (Very high) 1 (Low) 0 (Low) 2 (Low) 36 33
23 16 (Low) 2 (Low) 153 (Very high) 26 (Medium) 295 (High) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 166 (Very high) 0 (Low) 20 (Medium) 0 (Low) 4 (Low) 44 (Medium) 2 (Low) 0 (Low) 1 (Low) 22 35
24 14 (Low) 4 (Low) 115 (High) 30 (Medium) 271 (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) 33 (Medium) 0 (Low) 4 (Low) 49 (Medium) 3 (Low) 0 (Low) 2 (Low) 42 26
25 13 (Low) 2 (Low) 116 (High) 21 (Medium) 228 (High) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 141 (Very high) 0 (Low) 8 (Low) 0 (Low) 4 (Low) 22 (Medium) 1 (Low) 0 (Low) 4 (Low) 24 20
26 5 (Low) 3 (Low) 59 (Medium) 20 (Medium) 154 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 3 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 130 (Very high) 0 (Low) 16 (Medium) 0 (Low) 0 (Low) 15 (Medium) 1 (Low) 0 (Low) 2 (Low) 14 16
27 — — — 26 (Medium) 88 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) — 2 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 114 (Very high) 0 (Low) 80 (High) 0 (Low) — 101 (Very high) 2 (Low) 0 (Low) 1 (Low) 29 25
28 — — — 26 (Medium) 92 (Medium) 4 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) — 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 109 (Very high) 0 (Low) 111 (Very high) 0 (Low) — 37 (Medium) 2 (Low) 0 (Low) 1 (Low) 19 23
29 — — — 12 (Low) 109 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) — 2 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 80 (High) 0 (Low) 156 (Very high) 0 (Low) — 28 (Medium) 2 (Low) 0 (Low) 0 (Low) 21 22
30 — — — 38 (Medium) 146 (Medium) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) — 8 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 101 (Very high) 0 (Low) 161 (Very high) 0 (Low) — 30 (Medium) 8 (Low) 0 (Low) 2 (Low) 58 35
31 — — — 25 (Medium) 83 (Medium) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) — 6 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 74 (High) 0 (Low) 133 (Very high) 0 (Low) — 47 (Medium) 13 (Low) 0 (Low) 0 (Low) 48 22