On an average day, pollen counts rise during the morning, peak about midday, and then gradually fall. So the lowest pollen counts are usually before dawn and in the late afternoon to early evening.

What month is pollen the highest?

Here's a general timeline of common pollen seasons: March through June is tree pollen season. June, July, and August is usually when the grass pollens are high, sometimes into September in a warm year. August through the end of October is weed pollen season - it takes a hard freeze to kill off the weeds.

How do you know when the pollen count is high?

The pollen count tells you just how much pollen is in the air by measuring specific pollen grains like trees, grasses, weeds and mould spores during a 24-hour day. Days when the pollen count is high means you should be on high alert. You're much more likely to experience sneezing or itchy eyes that just won't go away.