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Two-thirds of all physician office visits are for ear, nose, throat or allergic problems!

Today’s Pollen Count

Pollen Archive

July 2017

Date Fungus General
Weeds
Grass
Jul 16,27900
Jul 26,27900
Jul 36,12400
Jul 4000
Jul 56,89900
Jul 68,992016
Jul 78,91400
Jul 87,59608
Jul 96,35600
Jul 108,604016
Jul 118,139023
Jul 127,13100
Jul 1304,2638
Jul 145,271016
Jul 155,34800
Jul 165,968016
Jul 175,19308
Jul 184,80600
Jul 194,65100
Jul 204,263031
Jul 214,728016
Jul 224,57300
Jul 234,80600
Jul 244,806046
Jul 254,728031
Jul 264,41800
Jul 275,27100
Jul 285,65800
Jul 295,116031
Jul 304,651016
Jul 31000

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NAB: Reading the Charts

aaaai allergy pollen countsThe following Aeroallergen Network calculations are based on the data (per cubic meter) reported by all certified counting stations for trees, grasses, weeds and molds.

  • 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)

Based on these calculations, we suggest the following definitions for low, moderate, high and very high concentration levels:

NAB SCALE

* MOLD GRASS TREE WEED
0 Absent 0 Absent 0 Absent 0 Absent
1 – 6499 Low 1 – 4 Low 1 – 14 Low 1 – 9 Low
6500 – 12999 Moderate 5 – 19 Moderate 15 – 89 Moderate 10 – 49 Moderate
13000 – 49999 High 20 – 199 High 90-1499 High 50 – 499 High
>50000 Very High >200 Very High >1500 Very High >500 Very High

 

* These mold levels were determined based on outdoor exposure to natural occurring spores in the environment and should not be applied to indoor exposure which may represent an entirely different spectrum of spore types.

These definitions would allow comparison between sites across the country. They are based on ecological measurements, not health effects. However, assuming dose/response relationships are the same across the country, the definitions are probably more appropriate than a definition based on local numbers. This does mean that, for some stations, some categories will never be high.