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 26, 2016

Contact Us

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

Thursday's Comments

With all the rain our airborne spore level is reaching new heights. The spore level starts out low in the Spring. But, as soon as we get daily low temperatures above 45 degrees, the mean daily airborne level increases. With every rain we see a burst of ascospores that go out and form new colonies. Each little brown spot on a leaf is typically a newly formed fungal colony. As the temperatures stay warm, with every rainfall event, the total number of colonies capable of putting spores into the air increases. So, if the rainfall continues, by fall we have some extremely high spore levels.


Location Pollen (m3) Mold (m3)
Downtown 591 (High) 15022 (High)

Laser Particle Counts

Size Count (ft3)
0.3-0.5uM 1205212
0.5-1.0uM 187477
1 - 5uM 29126
5-10uM 1194
10-25uM 76
>25uM 4

Top 5 Pollens

Pollen Count Percent
Mulberry 247 41.79%
Grass 138 23.35%
Other Tree Pollen 78 13.2%
Pollen, Other 37 6.26%
Hickory and Other Pollen 91 15.4%

Top 5 Molds

Mold Count Percent
Ascospores 12076 84.79%
Basidiospores 2022 14.2%
Cladosporium 86 0.6%
Smuts 58 0.41%

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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