Madrid-Ciudad Universitaria — April 2026

Main only
1,702 London Plane — day 6
1,603 London Plane — day 5
1,326 London Plane — day 4
26 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 22 (Low) 1,170 (Very high) 4 (Low) 0 (Low) 0 (Low) 3 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 196 (Very high) 2 (Low) 12 (Low) 7 (Low) 0 (Low) 4 (Low) 0 (Low) 5 (Low) 5 (Low) 6 0
2 14 (Low) 1,009 (Very high) 8 (Low) 1 (Low) 1 (Low) 3 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 105 (Very high) 1 (Low) 9 (Low) 18 (Medium) 1 (Low) 3 (Low) 1 (Low) 3 (Low) 6 (Low) 7 0
3 7 (Low) 671 (Very high) 2 (Low) 2 (Low) 1 (Low) 2 (Low) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 188 (Very high) 1 (Low) 3 (Low) 7 (Low) 0 (Low) 2 (Low) 0 (Low) 1 (Low) 2 (Low) 8 0
4 36 (Medium) 1,326 (Very high) 10 (Low) 2 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 150 (Very high) 1 (Low) 11 (Low) 6 (Low) 0 (Low) 3 (Low) 9 (Low) 1 (Low) 6 (Low) 7 0
5 11 (Low) 1,603 (Very high) 31 (Medium) 1 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 136 (Very high) 0 (Low) 2 (Low) 1 (Low) 0 (Low) 3 (Low) 0 (Low) 1 (Low) 22 (Medium) 5 0
6 23 (Low) 1,702 (Very high) 19 (Low) 1 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 8 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 102 (Very high) 1 (Low) 45 (Medium) 2 (Low) 2 (Low) 7 (Low) 0 (Low) 0 (Low) 30 (Medium) 6 1
7 21 (Low) 1,223 (Very high) 24 (Low) 7 (Low) 1 (Low) 2 (Low) 0 (Low) 0 (Low) 139 (Very high) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 151 (Very high) 2 (Low) 34 (Medium) 2 (Low) 3 (Low) 317 (Very high) 2 (Low) 0 (Low) 38 (Medium) 13 1
8 5 (Low) 330 (Very high) 3 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 11 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 14 (Low) 0 (Low) 7 (Low) 2 (Low) 0 (Low) 15 (Medium) 0 (Low) 1 (Low) 3 (Low) 1 0
9 6 (Low) 386 (Very high) 8 (Low) 3 (Low) 1 (Low) 3 (Low) 0 (Low) 0 (Low) 52 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 93 (High) 1 (Low) 26 (Medium) 0 (Low) 1 (Low) 26 (Medium) 2 (Low) 0 (Low) 12 (Low) 10 2
10 9 (Low) 425 (Very high) 8 (Low) 5 (Low) 1 (Low) 2 (Low) 0 (Low) 0 (Low) 25 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 75 (High) 0 (Low) 19 (Medium) 1 (Low) 1 (Low) 20 (Medium) 1 (Low) 2 (Low) 38 (Medium) 9 2
11 17 (Low) 307 (Very high) 8 (Low) 3 (Low) 1 (Low) 1 (Low) 0 (Low) 0 (Low) 97 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 77 (High) 0 (Low) 8 (Low) 0 (Low) 1 (Low) 93 (High) 1 (Low) 1 (Low) 25 (Medium) 2 3
12 14 (Low) 182 (High) 3 (Low) 3 (Low) 1 (Low) 3 (Low) 0 (Low) 0 (Low) 59 (High) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 36 (Medium) 0 (Low) 17 (Medium) 1 (Low) 0 (Low) 104 (Very high) 2 (Low) 0 (Low) 25 (Medium) 2 1
13 3 (Low) 129 (High) 8 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 29 (Medium) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 35 (Medium) 0 (Low) 22 (Medium) 0 (Low) 0 (Low) 43 (Medium) 1 (Low) 0 (Low) 7 (Low) 1 1
14 5 (Low) 53 (Medium) 7 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 55 (High) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 12 (Low) 0 (Low) 3 (Low) 0 (Low) 0 (Low) 58 (High) 3 (Low) 0 (Low) 11 (Low) 2 0
15 5 (Low) 153 (High) 16 (Low) 4 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 173 (Very high) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 25 (Medium) 1 (Low) 23 (Medium) 0 (Low) 0 (Low) 505 (Very high) 6 (Low) 0 (Low) 16 (Medium) 5 1
16 3 (Low) 89 (Medium) 25 (Low) 12 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 135 (Very high) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 22 (Medium) 0 (Low) 17 (Medium) 0 (Low) 0 (Low) 363 (Very high) 8 (Low) 0 (Low) 13 (Low) 5 0
17 4 (Low) 101 (High) 26 (Low) 13 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 63 (High) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 25 (Medium) 0 (Low) 21 (Medium) 0 (Low) 0 (Low) 542 (Very high) 16 (Medium) 1 (Low) 18 (Medium) 8 1
18 5 (Low) 90 (Medium) 26 (Low) 7 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 39 (Medium) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 18 (Medium) 0 (Low) 17 (Medium) 0 (Low) 0 (Low) 1,006 (Very high) 9 (Low) 0 (Low) 22 (Medium) 6 0
19 5 (Low) 108 (High) 25 (Low) 12 (Low) 1 (Low) 1 (Low) 0 (Low) 0 (Low) 49 (Medium) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 18 (Medium) 0 (Low) 14 (Low) 0 (Low) 0 (Low) 1,002 (Very high) 9 (Low) 0 (Low) 20 (Medium) 10 1
20 8 (Low) 53 (Medium) 43 (Medium) 21 (Medium) 20 (Low) 1 (Low) 0 (Low) 0 (Low) 69 (High) 0 (Low) 0 (Low) 3 (Low) 0 (Low) 3 (Low) 0 (Low) 0 (Low) 18 (Medium) 0 (Low) 29 (Medium) 0 (Low) 1 (Low) 803 (Very high) 11 (Low) 0 (Low) 25 (Medium) 12 0
21 8 (Low) 59 (Medium) 33 (Medium) 20 (Medium) 15 (Low) 0 (Low) 0 (Low) 0 (Low) 104 (Very high) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 8 (Low) 1 (Low) 14 (Low) 0 (Low) 4 (Low) 1,089 (Very high) 10 (Low) 1 (Low) 14 (Low) 12 0
22 2 (Low) 36 (Medium) 42 (Medium) 15 (Low) 97 (Medium) 0 (Low) 0 (Low) 0 (Low) 123 (Very high) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 17 (Medium) 0 (Low) 7 (Low) 0 (Low) 3 (Low) 593 (Very high) 15 (Medium) 0 (Low) 17 (Medium) 15 0
23 10 (Low) 44 (Medium) 23 (Low) 15 (Low) 22 (Low) 0 (Low) 0 (Low) 0 (Low) 36 (Medium) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 7 (Low) 0 (Low) 22 (Medium) 0 (Low) 8 (Low) 725 (Very high) 8 (Low) 0 (Low) 18 (Medium) 13 1
24 — — — — — — — — — — — — — — — — — — — — — — — — — — —
25 — — — — — — — — — — — — — — — — — — — — — — — — — — —
26 — — — — — — — — — — — — — — — — — — — — — — — — — — —
27 — — — — — — — — — — — — — — — — — — — — — — — — — — —
28 8 (Low) 5 (Low) 31 (Medium) 13 (Low) 18 (Low) 0 (Low) 0 (Low) 0 (Low) 18 (Medium) 0 (Low) 0 (Low) 3 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 225 (Very high) 0 (Low) 4 (Low) 498 (Very high) 4 (Low) 0 (Low) 11 (Low) 14 0
29 6 (Low) 7 (Low) 30 (Medium) 4 (Low) 42 (Low) 0 (Low) 0 (Low) 0 (Low) 26 (Medium) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 171 (Very high) 0 (Low) 0 (Low) 281 (Very high) 2 (Low) 0 (Low) 6 (Low) 4 0
30 1 (Low) 1 (Low) 152 (Very high) 13 (Low) 1,098 (Very high) 0 (Low) 0 (Low) 0 (Low) 13 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 61 (High) 0 (Low) 5 (Low) 105 (Very high) 7 (Low) 0 (Low) 3 (Low) 14 5