An aeropalynological survey of the atmosphere of Buyukorhan in Bursa Province was carried out from January 2012 to December 2013 using a Durham gravimetric sampler. The number of pollen grains per cm(2) was calculated on a weekly basis. Over 2 years a total of 13,274 pollen grains/cm(2) from 44 taxa, including 24 arboreal plants (APs) and 20 nonarboreal plants (NAPs), and unidentified pollen grains were recorded. In 2012 and 2013, respectively, 5159 and 8115 pollen grains were recorded. The pollen grains consisted of 87.46% APs, 12.20% NAPs, and 0.35% unidentified plants. Pinus, Cupressaceae/Taxaceae, Quercus, Poaceae, Morus, Plantago, Olea europaea, and Cedrus were responsible for the highest pollen amounts in the study area. The highest number of pollen grains (49.84%) was recorded during May.