Nevada pollen and allergy seasons
Nevada has a spring tree season in its valleys and a sagebrush led weed season in late summer.
Twelve month pollen calendar
What is active in August
Cities in Nevada
No tracked cities yet for Nevada.
Today and worst today come from live readings where available. Typical shows the usual level for this month from the seasonal profile.
Pollen is only half of what's in the air. See today's air quality in Nevada for ozone, dust, and smoke readings by city.
The Nevada allergy season
Allergy levels in Nevada peak in August, when sagebrush pollen runs highest. The season moves through tree pollen around February, grass in April, weed pollen such as ragweed in August. Levels start to climb around February. The lowest pollen levels of the year arrive in January.
Common questions
When does allergy season start in Nevada?
Pollen levels in Nevada usually begin climbing in February and reach their highest point in August.
What is the worst month for allergies in Nevada?
August is typically the worst month in Nevada, driven by sagebrush pollen.
When does ragweed season end in Nevada?
Ragweed pollen in Nevada usually fades by the end of September, after the first hard frost in colder areas.
When is the best time for allergies in Nevada?
January usually brings the lowest pollen levels of the year in Nevada.