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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

August 2018

Date Elm Fungus Grass Pigweed Ragweed Russian
Thistle
Aug 107,44131000
Aug 2166,0460000
Aug 306,1240000
Aug 4000000
Aug 504,9610000
Aug 603,5650000
Aug 704,03116000
Aug 804,2630000
Aug 904,7280000
Aug 1005,2710000
Aug 11000000
Aug 12007,131000
Aug 1307,9060000
Aug 1409,3020000
Aug 15012,09316000
Aug 1608,1398000
Aug 17000000
Aug 1807,67400160
Aug 1909,6120000
Aug 20000000
Aug 2108,52700160
Aug 2206,8990000
Aug 23010,852001616
Aug 2409,53400230
Aug 2507,5190000
Aug 2608,3720000
Aug 2708,91403100
Aug 28167,67431000
Aug 2907,82900016
Aug 30168,29400310
Aug 3107,0540000

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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.