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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

May 2019

Date Elm Fungus Grass Juniper Maple Mulberry Oak Pine Willow
May 108,682310001600
May 208,992160310000
May 3167,596160620000
May 408,527230310000
May 523969460310000
May 607,8292304603100
May 709,8441080160000
May 807,51946000000
May 9000000000
May 1009,53477000000
May 1107,8290000000
May 1207,05431000000
May 13010,2321240310000
May 1409,92277000000
May 15011,47216216000230
May 16011,085108000000
May 17168,759772300000
May 18000000000
May 1908,52731000000
May 20011,24013931000230
May 21011,240930000023
May 22010,46577000000
May 2308,52762000000
May 24010,3870000000
May 25000000000
May 26000000000
May 27000000000
May 28000000000
May 2905,813690016000
May 3007,90662000000
May 31000000000

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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.