Dr. David Kluge
Great Falls Clinic
Great Falls, MT · Montana
Great Falls, MT Pollen Count Today
View today's allergy index, primary allergen, weather context, tree, grass, and weed pollen levels, plus the 5-day pollen forecast for Great Falls.
Today's pollen count in Great Falls
Today in Great Falls, Montana, the forecasted pollen level is high with an allergy index of 4. The primary allergen is Ragweed. 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 Great Falls. Actual exposure can vary by neighborhood, weather, and time outdoors.
Pollen Level
High Risk4
Google UPI (0–5)
Primary Allergen
Ragweed
Limit outdoor exposure. Take allergy medication and monitor symptoms closely.
57°
Temp
78%
Humidity
3
Wind mph
Pollen: Includes data from Google Maps · Weather: Includes data from Google Maps
5-Day Pollen Forecast
Best day this week
Mon - High
Worst day this week
Fri - High
Mon
87°/63°
4
High
Tree0
Grass0
Weed4
Today
87°/63°
4
High
Tree0
Grass0
Weed4
Tomorrow
87°/63°
4
High
Tree0
Grass0
Weed4
Thu
87°/63°
4
High
Tree0
Grass0
Weed4
Fri
87°/63°
4
High
Tree0
Grass0
Weed4
None
Very Low
Low
Moderate
High
Very High
Allergen Breakdown
Ragweed
High
Ava Personal Risk
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Weather-allergy synergy
Why conditions feel this way today
Today in Great Falls, 78% humidity may keep irritation noticeable, especially if ragweed pollen overlaps with damp-weather mold sensitivity.
- Temp
- 57°F
- Humidity
- 78%
- Wind
- 3 mph
- Rain chance
- 10%
24-hour allergy risk curve
Best outdoor window today in Great Falls
Better
Later evening or the calmest part of the day.
Avoid
Dry, breezy morning and midday periods.
Extra caution
Parks, fields, tree-lined streets, yard work, and long outdoor commutes.
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
- Includes data from Google Maps · Weather API
- 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 Great Falls, MT
Use today's pollen forecast alongside nearby allergy and immunology profiles when symptoms need clinical follow-up, testing, or long-term treatment planning.
Dr. Elaine Barbieri
Allergy & Asthma Center of Montana
City allergy guide
Great Falls allergy profile
Today's risk+
Great Falls allergy conditions are shaped by local weather, seasonal vegetation, and short-term changes in wind, rain, humidity, and temperature. Tree pollen is usually more important in spring, grass pollen often builds from late spring into summer, and weed pollen can become more noticeable later in the year.
Use today's pollen index alongside the 5-day forecast to plan commutes, outdoor exercise, yard work, and window-open time in Great Falls. Conditions can still vary by neighborhood, nearby plants, and time spent outdoors.
Great Falls's guide sections below focus on recurring local exposure patterns. For today, treat the high Ragweed reading as the live risk signal and use the weather card above for short-term wind, humidity, and rain context.
Seasonal guide+
Spring
Tree pollen
Often drives early-season symptoms
Late spring to summer
Grass pollen
Can rise around lawns, parks, and open areas
Late summer to fall
Ragweed/weed pollen
Major fall allergy trigger
Varies
Mold spores
Often affected by moisture and decaying leaves
Treatment and planning tips+
Track the forecast
Check Great Falls pollen levels daily during active allergy periods.
Reduce indoor exposure
Keep windows closed on high-pollen days and use HVAC or HEPA filtration when appropriate.
Plan medication timing
Follow your clinician's or product-label instructions, especially before your usual peak season.
Great Falls seasonal pollen calendar
Tree pollen
Spring
Often drives early-season symptoms
Grass pollen
In season nowLate spring to summer
Can rise around lawns, parks, and open areas
Ragweed/weed pollen
In season nowLate summer to fall
Major fall allergy trigger
Mold spores
Varies
Often affected by moisture and decaying leaves
Common pollen triggers around Great Falls
| 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 |
Frequently asked questions about pollen in Great Falls
What is the pollen count in Great Falls today?
Today in Great Falls, Montana, the pollen level is high with an allergy index of 4. The main allergen to watch is Ragweed.
When is allergy season in Great Falls, Montana?
Allergy season in Great Falls, Montana 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 Great Falls?
If you have seasonal allergies in Great Falls, 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 Great Falls, Montana?
Great Falls 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.