New Jersey sits in the heart of the Northeast pollen corridor — high tree pollen in spring and heavy ragweed in fall make it one of the more challenging states for allergy sufferers.
Peak pollen season in New Jersey: April–September. Primary allergens: BirchOakRagweed
Tree pollen is the first major allergen each year in New Jersey, typically starting in early spring with cedar and alder, followed by oak and birch through May.
Grass pollen takes over in late spring through early summer, peaking from May to July depending on location within the state.
Ragweed dominates fall allergies in New Jersey, typically from August through October. It's the most widespread fall allergen in the US.
The pollen count in New Jersey varies by city and season. Peak pollen season runs April–September. Select a city above for live data.
Pollen levels vary across New Jersey. Cities in warmer, more humid areas typically see higher counts. Check individual city pages for current levels.
Pollen season in New Jersey peaks in April–September. Tree pollen starts in late winter, followed by grass in summer and ragweed in fall.