Children's Mercy Kansas City

Laser particle counts are the number of particles per cubic foot divided into 6 different size ranges. A laser beam literally counts the number of such particles as they are sucked past a detector. There is evidence that increased numbers of particles, particularly in the smaller ranges, are associated with heart diseases. That is why we measure it.

Thursday, May 05, 2016

Contact Us

Phone: (816) 696-8888
Fax: (816) 346-1301

Thursday's Comments

The final Mulberry family tree to release pollen in our area is the Osage tree. Sometimes referred to at the Osage Orange tree because of the large orange shaped fruit it produces in the fall. This tree is native to the Red River Valley in North Texas and has been spread throughout the Mississippi Valley mostly by humans. It is a thorny bush like tree and has been planted in Europe as an ornamental bush. It is valued for its use as fence posts and has been known to stand for over 100 years without rotting.


Location Pollen (m3) Mold (m3)
Downtown 521 (High) 2224 (Low)

Laser Particle Counts

Size Count (ft3)
0.3-0.5uM 505937
0.5-1.0uM 60518
1 - 5uM 20471
5-10uM 2337
10-25uM 439
>25uM 29

Top 5 Pollens

Pollen Count Percent
Mulberry 121 23.22%
Willow 118 22.65%
Ash 83 15.93%
Pollen, Other 33 6.33%
Other Tree and Weed Pollen 166 31.86%

Top 5 Molds

Mold Count Percent
Ascospores 953 42.83%
Cladosporium 896 40.27%
Basidiospores 231 10.38%
Smuts 87 3.91%
Epicoccum and Alternaria 58 2.61%

Pollen and mold counts are collected at Children's Mercy Hospitals and Clinics Hospital Hill location using a Hirst spore trap manufactured by Burkard Limited. Results are expressed as the mean value of the particles per cubic meter and represent an integrated 24 hour collection. These results may be published for media purposes provided the Children's Mercy Hospitals and Clinics logo is used to acknowledge the source. Written authorization must be provided for commercial use of the results. For a recorded count, call (816) 346-1331.

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