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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

March 2020

Date Ash Elm Fungus Grass Juniper Maple Mulberry Oak Pine
Mar 101394,573312480000
Mar 2161396,8990770000
Mar 316935,58181860000
Mar 40168,37203100310
Mar 50626,899010800460
Mar 601246,821167700310
Mar 70935,4270770000
Mar 80625,11607700160
Mar 90314,2630620000
Mar 100776,82101390000
Mar 1101246,434010800460
Mar 1201247,1310108310770
Mar 130466,43403100160
Mar 140164,341000000
Mar 15005,271000000
Mar 160316,1240230000
Mar 170466,744166200310
Mar 18466,04603103252324650
Mar 194606,8211618634126338731
Mar 200237,44100186015516
Mar 21007,1311609362770
Mar 22007,674062310230
Mar 23008,4490313252481860
Mar 2402638,682310961015531
Mar 25162329,53446071332515516
Mar 2605429,53493462,01512451116
Mar 27000000000
Mar 2823930108771,1626246531
Mar 290779,534461686817032516
Mar 30017011,0856231914773410
Mar 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.