Connecticut, United States

New Haven, CT Pollen Count Today

View the current allergy index, primary allergen, tree, grass, and weed pollen levels, plus the 5-day pollen forecast for New Haven.

Today's pollen count in New Haven

Today in New Haven, Connecticut, the forecasted pollen level is high with an allergy index of 4. The primary allergen is Maple. Use the forecast below to see whether conditions are likely to rise, ease, or stay steady over the next few days.

AllergyAva shows forecasted pollen levels and allergy risk estimates for New Haven. Actual exposure can vary by neighborhood, weather, and time outdoors.

Current level
High
Allergy index
4
Main allergen
Maple

Pollen Level

High Risk
4

Pollen Index

Primary Allergen

Maple

Limit outdoor exposure. Take allergy medication and monitor symptoms closely.

72°

Temp

56%

Humidity

5

Wind mph

Source: Includes pollen data from Google

Updated June 27, 2026 at 3:57 PM ET.

Check pollen in another city or ZIP code

5-Day Pollen Forecast

Best day this week

Tomorrow - Very Low

Worst day this week

Wed - Very High

Today
86°/52°
3
Moderate
Tree2
Grass0
Weed0
Tomorrow
79°/47°
1
Very Low
Tree1
Grass0
Weed0
Mon
88°/54°
5
Very High
Tree1
Grass0
Weed0
Tue
92°/58°
5
Very High
Tree1
Grass0
Weed0
Wed
88°/46°
5
Very High
Tree1
Grass0
Weed0
None
Very Low
Low
Moderate
High
Very High

Allergen Breakdown

Maple
High
Cedar
Low
Oak
Very Low
Birch
None

Pollen & Allergy Guide for New Haven, CT

New Haven, Connecticut residents can experience significant pollen exposure throughout the year. Tree pollen typically peaks during spring months, while grass pollen dominates in summer. Fall brings elevated ragweed levels, which is one of the most common allergens in the region.

When Is Allergy Season in New Haven?

Allergy season in New Haven generally begins in early spring as trees start releasing pollen. The most intense period varies by allergen type. Monitoring daily pollen counts with Allergy Ava helps you plan ahead and manage symptoms proactively.

Tips for Managing Allergies in New Haven

Track your daily pollen exposure, consult with a local allergist for personalized treatment, and consider starting preventive medications 2-4 weeks before your peak allergy season. Indoor air quality management with HEPA filters can also make a significant difference.

New Haven allergy season calendar

Tree pollen

In season now

Spring

Often drives early-season symptoms

Grass pollen

In season now

Late spring to summer

Can rise around lawns, parks, and open areas

Ragweed/weed pollen

Late summer to fall

Major fall allergy trigger

Mold spores

Varies

Often affected by moisture and decaying leaves

Common pollen triggers around New Haven

TriggerTypical seasonWhat to know
Tree pollenSpringOften drives early-season symptoms
Grass pollenLate spring to summerCan rise around lawns, parks, and open areas
Ragweed/weed pollenLate summer to fallMajor fall allergy trigger
Mold sporesVariesOften affected by moisture and decaying leaves

Frequently asked questions about pollen in New Haven

What is the pollen count in New Haven today?

Today in New Haven, Connecticut, the pollen level is high with an allergy index of 4. The main allergen to watch is Maple.

When is allergy season in New Haven, Connecticut?

Allergy season in New Haven, Connecticut can vary by allergen and weather conditions. Tree pollen often rises in spring, grass pollen becomes more active in late spring and summer, and weed pollen can remain elevated later in the year depending on local climate and vegetation.

How often should I check the pollen forecast in New Haven?

If you have seasonal allergies in New Haven, it is helpful to check the pollen forecast daily during peak allergy periods. Shifts in wind, rainfall, temperature, and humidity can all change local pollen exposure from one day to the next.

What pollen types affect people in New Haven, Connecticut?

New Haven residents may be affected by tree pollen, grass pollen, and weed pollen during different parts of the year. The strongest trigger depends on the season, nearby vegetation, and current weather conditions.