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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 2017

Date Ash Cotton
Wood
Elm Fungus Grass Juniper Maple Mulberry Oak Pine Willow
Mar 1310540161623871646310
Mar 23101243,255018631046000
Mar 34601083,178232323563177160
Mar 45401083,4100155341461600
Mar 56201084,2630294372466200
Mar 6620934,7280434310771600
Mar 700315,1930622631,317800
Mar 8160625,27123933411,22412300
Mar 900464,7281610827996117000
Mar 1000000000000
Mar 1100775,968017040355815500
Mar 1200462,015001,0854801701390
Mar 1300772,6353146651480186620
Mar 1400622,7900108480697139160
Mar 1500933,255015534126313900
Mar 1600312,868062049646160
Mar 1700312,94504634138912400
Mar 1823002,5581602172946200
Mar 1900000000000
Mar 2000463,17831018609800
Mar 213101083,41077021731062460
Mar 221601864,8061610875940331093232
Mar 236277233,02346312,868294170310
Mar 2400000000000
Mar 257762162,79031231,90634118600
Mar 2600000000000

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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.