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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

September 2016

Date Cedar
Elm
Elm Fungus Pigweed Ragweed
Sep 12406,124310
Sep 2005,89100
Sep 3006,8991631
Sep 4006,3563146
Sep 500000
Sep 6006,744046
Sep 79304,41816232
Sep 8005,50323170
Sep 9005,03816232
Sep 103104,7280201
Sep 11004,65116325
Sep 124604,80631341
Sep 131603,8750263
Sep 14003,56516418
Sep 153103,56523341
Sep 16004,2680294
Sep 173103,7980387
Sep 18004,8830263
Sep 19004,7280279
Sep 20004,3410341
Sep 211604,3410635
Sep 22004,4180403
Sep 23003,6430527
Sep 24003,79831511
Sep 25003,8750434
Sep 26003,2550341
Sep 27003,2550325
Sep 28003,1000527
Sep 293104,2630255
Sep 300164,8060372

 

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.