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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

July 2021

Date Cotton
Wood
Elm Fungus Grass
Jul 116815,03823
Jul 20019,68916
Jul 302317,4418
Jul 40000
Jul 50016,1240
Jul 60000
Jul 70015,8130
Jul 80000
Jul 90015,42616
Jul 100014,2630
Jul 110013,8750
Jul 120014,49616
Jul 130017,1310
Jul 140000
Jul 150013,7200
Jul 160011,9370
Jul 170000
Jul 180014,6518
Jul 190015,4260
Jul 200014,6510
Jul 210000
Jul 220013,4880
Jul 230013,7980
Jul 240010,38716
Jul 250000
Jul 26008,2170
Jul 270000
Jul 28007,2860
Jul 29005,2710
Jul 30005,5810
Jul 310000

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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.