Dr. Allyson Larkin
Pediatric Allergy and Immunology in Lawrenceville
Pittsburgh, PA · Western Pennsylvania river valley and wooded slopes
Pittsburgh, PA Pollen Count Today
Pittsburgh allergy risk is shaped by wooded hillsides, river valleys, mature neighborhood trees, parks, lawns, damp-weather mold, early-summer grass pollen, and late-season ragweed.
Today's pollen count in Pittsburgh
Today in Pittsburgh, Pennsylvania, the forecasted pollen level is low with an allergy index of 2. The primary allergen is Elm. 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 Pittsburgh. Actual exposure can vary by neighborhood, weather, and time outdoors.
Pollen Level
Low Risk2
Google UPI (0–5)
Primary Allergen
Elm
Air quality is good. Enjoy outdoor activities with minimal allergy concerns.
78°
Temp
79%
Humidity
18
Wind mph
Pollen: Includes data from Google Maps · Weather: AllergyAva estimated fallback
5-Day Pollen Forecast
Best day this week
Today - Low
Worst day this week
Sat - Moderate
Today
81°/59°
2
Low
Tree2
Grass0
Weed0
Tomorrow
81°/59°
2
Low
Tree2
Grass0
Weed0
Thu
81°/59°
2
Low
Tree2
Grass0
Weed0
Fri
84°/61°
3
Moderate
Tree3
Grass0
Weed0
Sat
84°/61°
3
Moderate
Tree3
Grass0
Weed3
None
Very Low
Low
Moderate
High
Very High
Allergen Breakdown
Elm
Low
Ava Personal Risk
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Weather-allergy synergy
Why conditions feel this way today
Breezy weather in Pittsburgh can lift pollen from trees, grasses, weeds, and outdoor surfaces even when the index is not at its weekly peak.
- Temp
- 78°F
- Humidity
- 79%
- Wind
- 18 mph
- Rain chance
- 50%
24-hour allergy risk curve
Best outdoor window today in Pittsburgh
Better
No clearly better outdoor window while alerts, storm risk, or strong wind are present.
Avoid
Storm periods, gust fronts, and exposed outdoor areas.
Extra caution
Stay indoors during storms, especially if pollen or asthma affects your breathing.
Data Confidence & Sources
Pollen Forecast
- Source
- Includes data from Google Maps · Pollen API (1×1 km grid resolution)
- Last Daily Update
Pollen models recalculate once daily
Weather Conditions
- Source
- AllergyAva estimated weather fallback
- Last Refresh
Weather data updates every 15–30 minutes
Local pollen exposure can vary by micro-vegetation, wind gusts, structural barriers, and time spent outdoors.
Check pollen in another city or ZIP code
Local allergy care
Allergists near Pittsburgh, PA
Use today's pollen forecast alongside nearby allergy and immunology profiles when symptoms need clinical follow-up, testing, or long-term treatment planning.
Dr. Andrej Petrov
UPMC Pulmonary Allergy Immunology
Dr. Christin Lawler Deal
Pediatric Allergy and Immunology in Lawrenceville
Showing 3 of 11 published allergist profiles in this area.
City allergy guide
Pittsburgh allergy profile
Today's risk+
Pittsburgh's pollen pattern reflects western Pennsylvania's wooded slopes, river valleys, parks, older neighborhoods, and changing spring warmups. Maple appears early, followed by oak, birch, sycamore, and other hardwoods during the main tree pollen season.
Grass pollen generally rises in late spring and early summer across lawns, parks, hillsides, and open areas. Ragweed becomes the leading late-season trigger, while damp valleys, leaf litter, and rainy spring or fall periods can make mold irritation more noticeable.
Pittsburgh's guide sections below focus on recurring local exposure patterns. Today's low Elm reading is the live risk signal, while the seasonal and neighborhood notes explain where exposure can still differ during normal routines.
Seasonal guide+
December-February
Low pollen and indoor season
Outdoor pollen is usually low, but indoor dust, pets, damp basements, and heating-season dryness can still irritate symptoms.
March-May
Spring hardwood pollen
Maple appears early, followed by oak, birch, sycamore, and other trees across wooded slopes and neighborhoods.
May-August
Grass pollen season
Timothy, Kentucky bluegrass, lawns, parks, meadows, and open areas can raise grass exposure.
August-October
Ragweed and fall mold
Ragweed is Pennsylvania's principal fall pollen trigger, while damp leaves and soil can raise mold irritation.
Treatment and planning tips+
Hillside routes
Wooded slopes and park trails can feel more active during spring tree pollen and damp fall mold periods.
Riverfront plans
Watch humidity and wind around riverfront trails, where damp air and pollen settling can change exposure.
Yard work
Mowing, leaf cleanup, and brush work can stir grass pollen, ragweed, mold spores, and plant debris.
Pittsburgh seasonal pollen calendar
Low pollen and indoor season
December-February
Outdoor pollen is usually low, but indoor dust, pets, damp basements, and heating-season dryness can still irritate symptoms.
Spring hardwood pollen
March-May
Maple appears early, followed by oak, birch, sycamore, and other trees across wooded slopes and neighborhoods.
Grass pollen season
May-August
Timothy, Kentucky bluegrass, lawns, parks, meadows, and open areas can raise grass exposure.
Ragweed and fall mold
August-October
Ragweed is Pennsylvania's principal fall pollen trigger, while damp leaves and soil can raise mold irritation.
Common pollen triggers around Pittsburgh
| Trigger | Typical season | What to know |
|---|---|---|
| Tree pollen | Spring | Often drives early-season symptoms |
| Grass pollen | 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 |
Local exposure factors
Pittsburgh's river valley allergy factors
These local factors explain recurring exposure differences around Pittsburgh; the current index, primary allergen, and weather cards above remain the canonical source for today's live reading.
Wooded slopes and parks
Hillsides, parks, and mature trees can produce abundant spring maple, oak, birch, and sycamore pollen.
River valleys and settling air
The Allegheny, Monongahela, and Ohio river valleys can influence moisture, air movement, pollen settling, and mold irritation.
Lawns, meadows, and open hillsides
Grass pollen can build around parks, yards, hillsides, and open areas from late spring into early summer.
Ragweed and damp-weather mold
Late-season weeds and damp leaf litter can overlap in fall, especially before frost consistently reduces pollen.
Frequently asked questions about pollen in Pittsburgh
What is the pollen count in Pittsburgh today?
Today in Pittsburgh, Pennsylvania, the pollen level is low with an allergy index of 2. The main allergen to watch is Elm.
Why can Pittsburgh pollen feel different from eastern Pennsylvania cities?
Pittsburgh has wooded slopes, river valleys, parks, and western Pennsylvania weather patterns that differ from Philadelphia, the Lehigh Valley, and other eastern cities.
What months are worst for allergies in Pittsburgh?
March through May is usually spring tree pollen season, May through August brings grass pollen, and August through October is the main ragweed and fall mold period.
Do Pittsburgh's rivers affect allergies?
The rivers do not create pollen, but river valleys can influence moisture, air movement, pollen settling, and mold irritation around damp periods.
Which pollen types affect Pittsburgh in spring?
Maple often appears early, followed by oak, birch, sycamore, and other hardwood pollen from wooded slopes, parks, and mature neighborhood trees.