Great Falls, MT Pollen Count Today

Live pollen forecast and air quality for Great Falls, Montana

📍 Great Falls, MTToday · May 15
2/10
Breathability™ Score
Challenging day - reduce exposure during peak pollen times.
🌳Tree Pollen
Very High
🌱Grass Pollen
Low
🌿Weed Pollen
None
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Today's Pollen Levels in Great Falls

Tree pollen is the dominant contributor today in Great Falls, with levels reaching Very High. Other pollen types are not a significant factor right now. With a Breathability™ Score of 2, today may feel like a tougher allergy day.

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How Today's Pollen May Affect You

Mild allergy sufferers
You may feel symptoms sooner today. Tree pollen is elevated and air quality is Good, so lean toward shorter outings and cleaner indoor air.
Moderate allergy sufferers
Today may feel challenging. Limit prolonged outdoor time, keep indoor air filtered, and prioritize lower-exposure times of day.
Severe allergy sufferers
This may be a high-burden day. Minimize outdoor exposure where possible and focus on indoor spaces with filtered air.

5-Day Pollen Forecast

Today
May 15
Overall: Very High
Tree: Very High
Grass: Moderate
Weed: None
Wind: 28 mph (may spread pollen)
Rain: 0%
Humidity: 37%
Sat
May 16
Overall: Very High
Tree: Very High
Grass: Moderate
Weed: None
Wind: 17 mph (may spread pollen)
Rain: 88% (may wash pollen out)
Humidity: 38%
Sun
May 17
Overall: Very High
Tree: Very High
Grass: Low
Weed: None
Wind: 20 mph (may spread pollen)
Rain: 87% (may wash pollen out)
Humidity: 56%
Mon
May 18
Overall: Very High
Tree: Very High
Grass: Moderate
Weed: None
Wind: 15 mph (may spread pollen)
Rain: 0%
Humidity: 49%
Tue
May 19
Overall: High
Tree: High
Grass: Moderate
Weed: None
Wind: 14 mph
Rain: 89% (may wash pollen out)
Humidity: 54%

Tree Pollen in Great Falls Today

Tree pollen in Great Falls is Very High today, reaching 168.20 grains/m³. Oak and Birch are the dominant contributors. At this level, most people with tree pollen allergies will experience symptoms, and even mildly sensitive individuals may notice eye irritation or sneezing.

Common Symptoms

  • Sneezing
  • Runny or stuffy nose
  • Itchy, watery eyes
  • Scratchy throat
  • Sinus pressure

Species Breakdown

Oak168.20 grains/m³
Birch127.20 grains/m³
Alder0 grains/m³
Hazel0 grains/m³

Grass Pollen in Great Falls Today

Grass pollen in Great Falls is Low today, reaching 14.83 grains/m³. Grass is currently elevated. People with grass pollen sensitivity may notice nasal congestion and itchy eyes, especially during outdoor activities.

Common Symptoms

  • Itchy nose and eyes
  • Sneezing fits
  • Nasal congestion
  • Watery eyes
  • Coughing or wheezing for sensitive individuals

Species Breakdown

Grass14.83 grains/m³

Weed Pollen in Great Falls Today

Weed pollen in Great Falls is None today. Weed pollen season runs from late summer into fall (August through October), with ragweed as the primary trigger for most allergy sufferers. Current levels are low enough that most people should feel comfortable outdoors.

Species Breakdown

Ragweed0 grains/m³
Mugwort0 grains/m³

Air Quality in Great Falls Today

🌬️
Air Quality
Good
Good

Air Pollutant Breakdown

PM2.5Good
2 µg/m³
Tiny particles smaller than 2.5 micrometers that can reach deep into your lungs and bloodstream. High levels can affect breathing and heart health.
PM10Good
2 µg/m³
Larger particles up to 10 micrometers, like dust or pollen. They can irritate your airways and worsen allergies or asthma.
Ozone (O3)Good
99 µg/m³
Elevated levels irritate airways and can worsen asthma symptoms.
Nitrogen Dioxide (NO2)Good
1.1 µg/m³
A respiratory irritant from vehicle exhaust that can trigger inflammation in sensitive airways.
Sulfur Dioxide (SO2)Good
1.4 µg/m³
Even brief exposure can tighten airways, especially for people with asthma.
Carbon Monoxide (CO)Good
123.8 µg/m³
High levels reduce oxygen delivery in the body, compounding breathing difficulty on high-pollen days.

Weather in Great Falls Today

☀️
Weather
43°F
Clear
Humidity
62%
Wind
9 mph SW
Feels Like
38°F
Pressure
1011 mb

Frequently Asked Questions

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