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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 2017

Date Elm Fungus Grass Pigweed Ragweed
Oct 100000
Oct 21611,55000395
Oct 3625,58100193
Oct 4166,51100108
Oct 507,59800170
Oct 6317,90600217
Oct 707,13100139
Oct 8625,813160139
Oct 9316,04600139
Oct 10235,03800186
Oct 1108,604016108
Oct 12168,21700124
Oct 1307,59600170
Oct 1405,7360093
Oct 15316,201016217
Oct 16317,131046263
Oct 1706,51100108
Oct 1806,899016108
Oct 1905,96800124
Oct 20165,2710077
Oct 2105,4260077
Oct 2200000

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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.