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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

October 2019

Date Elm Fungus Pigweed Ragweed
Oct 10000
Oct 20000
Oct 3463,7980186
Oct 40000
Oct 5466,04631248
Oct 605,2780589
Oct 706,3560403
Oct 804,0310325
Oct 904,0310248
Oct 10464,9610480
Oct 11315,6580387
Oct 12314,3410170
Oct 13163,9530232
Oct 1403,7980186
Oct 1505,0380232
Oct 1605,2710155
Oct 1704,8060139
Oct 182947,2090108
Oct 192486,5891677
Oct 203877,2863193
Oct 215295,968062
Oct 223256,8990108
Oct 233414,9613177
Oct 241554,806093
Oct 2503,178046
Oct 2603,488016
Oct 2704,341016
Oct 28165,271046
Oct 2904,03100
Oct 3003,56500
Oct 3103,565016

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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.