Pollen & Mold

During pollen and mold season, the Southwest Ohio Air Quality Agency measures the daily levels of naturally occurring airborne pollutants These counts are expressed in grains per cubic meter of air for pollen levels and spores per cubic meter of air for mold levels.

Due to the COVID-19 impact, pollen and mold counting will be limited. We will be conducting pollen and mold counts to help keep you informed of natural airborne allergens as staffing permits. Check back often or follow us on Twitter or Facebook.

Friday, Sept 17, 2021 Pollen & Mold Counts

Type	Count
Pollen: Moderate	31
1st Prevalent: Elm	6
2nd Prevalent	0
Other Trees	0
Grasses	0
Ragweed	10
Other	15
Mold: High	2,178
1st Prevalent: Cladosporium	1104
2nd Prevalent: Ascospores	274
Other: Agrocybe, Basidiospores and Leptosphaeria	800

Pollen & Mold Descriptors

Descriptor	Pollen	Mold
Low	0 to 20	0 to 500
Moderate	21 to 100	501 to 1,500
High	101 to 1,000	1,501 to 5,000
Very high	Greater than 1,000	Greater than 5,000

Raw Daily Counts

The 2021 Raw Daily Counts (XLSX) includes a detailed record of pollen and mold sources for the season.

Statistical Averages for Pollen and Mold Data

Statistical Averages are calculated for ten years of data at our current address, 250 William Howard Taft Road, Cincinnati, Ohio 45219.

September 13 to September 17 (Calculated for Ten Years of Data)

Type	Monday	Tuesday	Wednesday	Thursday	Friday
Pollen	62	60	53	48	43
Mold	2,198	2,219	2,152	2,272	2,217

September 20 to September 24 (Calculated for Ten Years of Data)

Type	Monday	Tuesday	Wednesday	Thursday	Friday
Pollen	34	30	28	26	30
Mold	2,417	2,211	2,214	2,043	2,131