Most pollen that causes allergy problems is so small that it is invisible to the human eye. Learn all about pollen, the pollen count, and more.

DETROIT – Tree pollen levels have lowered some in Metro Detroit, but there are other types of pollen moving through our air this week. Levels of tree pollen were low on Tuesday, June 13, and are ...

The male pine cones, which dangle at the ends of lower branches, have many pollen sacks that produce and hold pollen. As the male cones mature, they nurture the pollen grains. Then, on sunny, windy ...

A map shows which states will have the worst pollen counts in 2026.

The Asthma and Allergy Foundation of America (AAFA) conducted an Allergy Capitals report for 2026, ranking the largest 100 cities in the contiguous U.S. by how challenging they are to live in if you ...

Due to climate change, plants' pollination season has been growing longer and longer. As a result, people are exposed to allergens for extended periods each year, raising a major public health concern ...

Around 10 to 18 million people in the UK have hay fever, and it's thought to impact about 20% to 25% of the population, according to the Met Office. This condition is a usual allergic response to ...

The Met Office has issued a warning about pollen levels in London this week, as the capital braces for a scorching weekend ahead. According to the Met Office, London and the South East will be facing ...

Did you know that a single ragweed plant can produce one billion grains of pollen in a season? Or that most pollen that causes allergy problems is so small that it is invisible to the human eye?