Receive Allergy Updates Via Email:

Receive allergy counts, news and information on allergy testing via email by joining our e-newsletter list.
Sign Up Now



Did you know?

Two-thirds of all physician office visits are for ear, nose, throat or allergic problems!

Today’s Pollen Count

Pollen Archive

February 2021

Date Elm Fungus Juniper Maple Pine
Feb 1423,5657700
Feb 2312,7906200
Feb 3773,02312400
Feb 4624,10810800
Feb 5463,953000
Feb 600000
Feb 71084,72817000
Feb 8464,4969300
Feb 900000
Feb 1002,7131600
Feb 1102,403000
Feb 1202,170000
Feb 1301,782000
Feb 1401,627000
Feb 1501,627000
Feb 1601,240000
Feb 1701,240000
Feb 1801,240000
Feb 1900000
Feb 2000000
Feb 21465,1166200
Feb 22936,89917000
Feb 23930124160
Feb 24626,12415580
Feb 255116,5891,069031
Feb 26465,1936200
Feb 27625,96818600
Feb 2805,116000

Subscribe to our Daily Pollen Count RSS Feed!

 

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.