Collado Villalba — April 2026

Main only
676 Oak — day 23
674 Oak — day 21
659 Oak — day 18
29 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 11 (Low) 6 (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) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 1
2 0 (Low) 10 (Low) 2 (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) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 3 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 0
3 1 (Low) 16 (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) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 7 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 1 0
4 1 (Low) 39 (Medium) 2 (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) 3 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 1 (Low) 1 2
5 6 (Low) 229 (High) 1 (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) 3 (Low) 22 (Medium) 0 (Low) 2 (Low) 4 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 3 (Low) 3 2
6 7 (Low) 222 (High) 5 (Low) 1 (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) 37 (Medium) 0 (Low) 32 (Medium) 6 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 5 (Low) 3 1
7 6 (Low) 140 (High) 2 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 108 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 19 (Medium) 0 (Low) 8 (Low) 4 (Low) 0 (Low) 20 (Medium) 1 (Low) 0 (Low) 2 (Low) 6 1
8 3 (Low) 42 (Medium) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 9 (Low) 0 (Low) 12 (Low) 0 (Low) 1 (Low) 6 (Low) 0 (Low) 0 (Low) 2 (Low) 6 1
9 10 (Low) 36 (Medium) 6 (Low) 4 (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) 9 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 2 (Low) 4 2
10 2 (Low) 14 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 6 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 3 (Low) 1 (Low) 3 (Low) 0 (Low) 0 (Low) 7 (Low) 0 (Low) 0 (Low) 3 (Low) 2 1
11 1 (Low) 5 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 23 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 16 (Medium) 0 (Low) 0 (Low) 2 (Low) 4 1
12 1 (Low) 4 (Low) 1 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 2 (Low) 1 (Low) 5 (Low) 0 (Low) 0 (Low) 7 (Low) 0 (Low) 1 (Low) 0 (Low) 3 1
13 0 (Low) 1 (Low) 4 (Low) 0 (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) 1 (Low) 0 (Low) 9 (Low) 0 (Low) 0 (Low) 1 (Low) 1 (Low) 0 (Low) 0 (Low) 1 0
14 2 (Low) 4 (Low) 6 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 6 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 0 (Low) 0 (Low) 5 1
15 1 (Low) 2 (Low) 8 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 12 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 5 (Low) 0 (Low) 3 (Low) 0 (Low) 0 (Low) 30 (Medium) 0 (Low) 0 (Low) 1 (Low) 6 0
16 2 (Low) 3 (Low) 9 (Low) 2 (Low) 1 (Low) 1 (Low) 0 (Low) 0 (Low) 41 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 11 (Low) 0 (Low) 0 (Low) 459 (Very high) 0 (Low) 1 (Low) 1 (Low) 3 1
17 2 (Low) 1 (Low) 7 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 35 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 3 (Low) 0 (Low) 34 (Medium) 0 (Low) 0 (Low) 410 (Very high) 0 (Low) 0 (Low) 3 (Low) 0 1
18 2 (Low) 3 (Low) 6 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 180 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 138 (Very high) 0 (Low) 0 (Low) 659 (Very high) 1 (Low) 0 (Low) 5 (Low) 1 2
19 1 (Low) 2 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 262 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 3 (Low) 1 (Low) 54 (High) 0 (Low) 0 (Low) 379 (Very high) 1 (Low) 1 (Low) 1 (Low) 4 1
20 1 (Low) 0 (Low) 5 (Low) 3 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 366 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 6 (Low) 0 (Low) 0 (Low) 388 (Very high) 2 (Low) 0 (Low) 4 (Low) 3 1
21 2 (Low) 2 (Low) 4 (Low) 2 (Low) 3 (Low) 0 (Low) 0 (Low) 0 (Low) 355 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 3 (Low) 0 (Low) 7 (Low) 0 (Low) 0 (Low) 674 (Very high) 1 (Low) 0 (Low) 1 (Low) 13 1
22 1 (Low) 0 (Low) 5 (Low) 3 (Low) 3 (Low) 0 (Low) 0 (Low) 0 (Low) 283 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 3 (Low) 0 (Low) 0 (Low) 436 (Very high) 2 (Low) 0 (Low) 2 (Low) 64 1
23 1 (Low) 3 (Low) 1 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 235 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 1 (Low) 676 (Very high) 1 (Low) 1 (Low) 2 (Low) 16 1
24 1 (Low) 0 (Low) 5 (Low) 2 (Low) 6 (Low) 0 (Low) 0 (Low) 0 (Low) 93 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 9 (Low) 0 (Low) 0 (Low) 365 (Very high) 1 (Low) 0 (Low) 0 (Low) 26 0
25 2 (Low) 2 (Low) 4 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 66 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 312 (Very high) 0 (Low) 0 (Low) 1 (Low) 5 1
26 1 (Low) 0 (Low) 3 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 110 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 7 (Low) 0 (Low) 0 (Low) 504 (Very high) 0 (Low) 0 (Low) 1 (Low) 23 0
27 1 (Low) 0 (Low) 2 (Low) 3 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 12 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 3 (Low) 0 (Low) 0 (Low) 203 (Very high) 0 (Low) 0 (Low) 0 (Low) 13 0
28 0 (Low) 0 (Low) 2 (Low) 2 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 71 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 7 (Low) 0 (Low) 0 (Low) 413 (Very high) 0 (Low) 0 (Low) 0 (Low) 23 0
29 1 (Low) 1 (Low) 4 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 21 (Medium) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 9 (Low) 0 (Low) 0 (Low) 96 (High) 1 (Low) 0 (Low) 0 (Low) 36 0
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