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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

August 2020

Date Elm Fungus Grass Ragweed
Aug 1011,62700
Aug 207,441160
Aug 306,58900
Aug 405,27100
Aug 504,34180
Aug 60000
Aug 704,03100
Aug 803,56500
Aug 90000
Aug 1004,34100
Aug 1103,33300
Aug 1203,72000
Aug 13165,19300
Aug 1405,27180
Aug 1505,271016
Aug 1604,41800
Aug 1705,271016
Aug 1806,74400
Aug 19165,891016
Aug 2085,34800
Aug 2104,72800
Aug 2203,25500
Aug 2304,49600
Aug 2403,95300
Aug 2505,27108
Aug 2603,72000
Aug 2704,72800
Aug 28166,04600
Aug 2906,35608
Aug 3005,96800
Aug 31169,53400

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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.