Las Rozas — May 2026

Main only
335 Oak — day 1
250 Pine — day 1
149 Oak — day 4
22 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 0 (Low) 0 (Low) 68 (Medium) 2 (Low) 100 (Medium) 0 (Low) 0 (Low) 0 (Low) 34 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 250 (Very high) 0 (Low) 1 (Low) 335 (Very high) 1 (Low) 0 (Low) 0 (Low) 22 1
2 0 (Low) 0 (Low) 30 (Medium) 1 (Low) 83 (Medium) 0 (Low) 0 (Low) 0 (Low) 1 (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) 65 (High) 0 (Low) 0 (Low) 0 (Low) 0 0
3 0 (Low) 3 (Low) 85 (High) 4 (Low) 144 (Medium) 0 (Low) 0 (Low) 0 (Low) 7 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 3 (Low) 74 (High) 0 (Low) 2 (Low) 68 (High) 1 (Low) 0 (Low) 0 (Low) 31 2
4 1 (Low) 2 (Low) 36 (Medium) 2 (Low) 18 (Low) 0 (Low) 0 (Low) 0 (Low) 6 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 93 (High) 0 (Low) 0 (Low) 149 (Very high) 1 (Low) 0 (Low) 0 (Low) 17 2
5 1 (Low) 0 (Low) 7 (Low) 1 (Low) 7 (Low) 0 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 14 (Low) 0 (Low) 0 (Low) 61 (High) 1 (Low) 0 (Low) 0 (Low) 6 0
6 0 (Low) 2 (Low) 24 (Low) 1 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 16 (Medium) 0 (Low) 1 (Low) 78 (High) 0 (Low) 0 (Low) 0 (Low) 4 0
7 1 (Low) 0 (Low) 14 (Low) 1 (Low) 14 (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) 15 (Medium) 0 (Low) 1 (Low) 107 (Very high) 1 (Low) 0 (Low) 1 (Low) 18 1
8 0 (Low) 0 (Low) 9 (Low) 1 (Low) 18 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 3 (Low) 0 (Low) 0 (Low) 19 (Medium) 0 (Low) 0 (Low) 0 (Low) 13 0
9 1 (Low) 0 (Low) 4 (Low) 0 (Low) 6 (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) 0 (Low) 11 (Low) 0 (Low) 0 (Low) 15 (Medium) 0 (Low) 0 (Low) 0 (Low) 3 0
10 0 (Low) 0 (Low) 9 (Low) 0 (Low) 4 (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) 0 (Low) 9 (Low) 0 (Low) 0 (Low) 18 (Medium) 0 (Low) 0 (Low) 1 (Low) 22 0
11 0 (Low) 0 (Low) 43 (Medium) 0 (Low) 5 (Low) 0 (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) 5 (Low) 0 (Low) 0 (Low) 10 (Low) 1 (Low) 0 (Low) 0 (Low) 30 1
12 0 (Low) 1 (Low) 18 (Low) 0 (Low) 2 (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) 14 (Low) 0 (Low) 1 (Low) 27 (Medium) 0 (Low) 0 (Low) 0 (Low) 12 0
13 1 (Low) 0 (Low) 9 (Low) 1 (Low) 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) 11 (Low) 0 (Low) 0 (Low) 25 (Medium) 1 (Low) 0 (Low) 0 (Low) 12 0
14 0 (Low) 0 (Low) 8 (Low) 3 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 2 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 31 (Medium) 0 (Low) 0 (Low) 78 (High) 3 (Low) 0 (Low) 1 (Low) 2 0
15 0 (Low) 0 (Low) 7 (Low) 2 (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) 0 (Low) 0 (Low) 13 (Low) 0 (Low) 0 (Low) 26 (Medium) 0 (Low) 0 (Low) 1 (Low) 9 0
16 1 (Low) 0 (Low) 23 (Low) 6 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 13 (Low) 0 (Low) 0 (Low) 22 (Medium) 1 (Low) 0 (Low) 0 (Low) 13 0
17 0 (Low) 0 (Low) 23 (Low) 5 (Low) 7 (Low) 0 (Low) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 9 (Low) 0 (Low) 0 (Low) 27 (Medium) 2 (Low) 0 (Low) 0 (Low) 9 0
18 1 (Low) 0 (Low) 104 (High) 15 (Low) 15 (Low) 0 (Low) 0 (Low) 0 (Low) 4 (Low) 0 (Low) 0 (Low) 1 (Low) 0 (Low) 1 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 15 (Medium) 0 (Low) 0 (Low) 35 (Medium) 5 (Low) 0 (Low) 0 (Low) 39 1
19 6 (Low) 0 (Low) 86 (High) 15 (Low) 13 (Low) 0 (Low) 0 (Low) 0 (Low) 5 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 12 (Low) 0 (Low) 0 (Low) 38 (Medium) 8 (Low) 0 (Low) 1 (Low) 51 5
20 — — — — — — — — — — — — — — — — — — — — — — — — — — —
21 — — — — — — — — — — — — — — — — — — — — — — — — — — —
22 — — — — — — — — — — — — — — — — — — — — — — — — — — —
23 — — — — — — — — — — — — — — — — — — — — — — — — — — —
24 — — — — — — — — — — — — — — — — — — — — — — — — — — —
25 — — — — — — — — — — — — — — — — — — — — — — — — — — —
26 — — — — — — — — — — — — — — — — — — — — — — — — — — —
27 — — — — — — — — — — — — — — — — — — — — — — — — — — —
28 — — — — — — — — — — — — — — — — — — — — — — — — — — —
29 — — — 9 (Low) 25 (Low) 0 (Low) 4 (Low) 0 (Low) 1 (Low) 0 (Low) — 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 70 (High) 0 (Low) — 33 (Medium) 2 (Low) 0 (Low) 2 (Low) 2 1
30 — — — 1 (Low) 14 (Low) 0 (Low) 3 (Low) 0 (Low) 0 (Low) 0 (Low) — 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 15 (Medium) 0 (Low) — 15 (Medium) 0 (Low) 0 (Low) 0 (Low) 0 0
31 — — — 7 (Low) 29 (Low) 0 (Low) 11 (Low) 0 (Low) 1 (Low) 0 (Low) — 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 0 (Low) 52 (High) 0 (Low) — 15 (Medium) 3 (Low) 0 (Low) 2 (Low) 11 1