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Pollen and Mold Center
Grass Pollen Levels - General Information
Get readings about Grass aeroallergens.
The following Aeroallergen Network calculations are based on the data reported by all counting stations for trees, grass, weeds, and molds. The National Allergy Bureau (NAB) Report calculates by:
- Median or 50th percentile (half of counts are below this point)
- 75th percentile (75% of counts are below this point)
- 99th percentile (99% of counts are below this point)
Grass Pollen Levels
| Grains per Cubic Meter |
Level |
| 0-5 |
Low |
| 5-20 |
Moderate |
| 20-200 |
High |
| 200 or more |
Very High |
What this means to grass pollen allergy sufferers
| Level |
Those who will likely suffer symptoms |
| Absent |
No symptoms |
| Low |
Only individuals extremely sensitive to grass pollens |
| Moderate |
Many individuals sensitive to grass pollens |
| High |
Most individuals with any sensitivity to grass pollens |
| Very High |
Almost all individuals with any sensitivity to grass pollens. Extremely sensitive people could have severe symptoms. |
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