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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 2018

Date Elm Fungus Mountain
Cedar
Ragweed
Nov 109,92200
Nov 207,67400
Nov 307,1311621
Nov 406,89900
Nov 506,74400
Nov 6011,162310
Nov 7010,155160
Nov 808,52700
Nov 90000
Nov 1007,36400
Nov 1105,89100
Nov 1205,89100
Nov 1304,96100
Nov 1404,108160
Nov 1504,72800
Nov 1604,341230
Nov 17164,96100
Nov 1805,038016
Nov 1904,49600
Nov 2005,11600
Nov 2104,03100
Nov 220000
Nov 2304,806310
Nov 2404,49600
Nov 250000
Nov 2604,72800
Nov 2705,968160
Nov 2804,031310
Nov 2905,891160
Nov 3005,581310

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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.