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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

November 2020

Date Fungus Grass Mountain
Cedar
Ragweed
Nov 14,961000
Nov 26,0460160
Nov 35,6580016
Nov 47,519000
Nov 50000
Nov 66,12402346
Nov 76,9768016
Nov 86,0460016
Nov 96,356000
Nov 106,511000
Nov 116,124000
Nov 126,589000
Nov 136,8991600
Nov 145,658000
Nov 156,1240023
Nov 165,271000
Nov 175,658000
Nov 184,651000
Nov 195,968008
Nov 206,58901616
Nov 215,426000
Nov 224,728000
Nov 236,4340016
Nov 240000
Nov 254,728000
Nov 260000
Nov 274,5730016
Nov 280000
Nov 293,488000
Nov 303,565080

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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.