The pollen you see along the lakeshore is most likely tree pollen especially pine. High pollen amounts and prevailing winds have caused this cumulative affect.
The amount of pollen can be affected by factors such as temperature, humidity and wind. An American study found that pollen amounts from all sources have increased up to 21% between 1990 and 2018.
Climate change is probably a contributing factor. Warmer weather signals plants to bloom, pollen seasons are starting earlier and lasting longer. Additionally, greenhouse emissions increase the atmospheric levels of carbon dioxide, a gas that stimulates plants to increase the production and release of pollen.


