when will pollen levels go down

Pollen levels generally go down after their daily peak, which is usually around midday to early afternoon, with the lowest levels before dawn and in the late afternoon to early evening. Seasonally, pollen levels start to decrease after the main pollen seasons end: tree pollen season typically ends by late spring or early summer (May to June), grass pollen season usually wraps up by mid to late summer (July to August), and weed pollen season, including ragweed, tends to end by late autumn (October to November). By September, grass and nettle pollen season ends in many places, marking the end of the peak hay fever season, with pollen levels continuing to be lower into the winter months. In summary, pollen levels tend to decline daily after mid- afternoon and seasonally after summer into early fall, depending on the type of pollen and region. This means that pollen levels typically go down significantly by late summer and early autumn, offering relief from pollen allergies.