Ali, Z.Shahzadi, K.Sidra, S.Zona, Z.Zainab, I.Aziz, K.Ahmad, M.Raza, S. T.Nasir, Zaheer A.Colbeck, I.2016-10-052016-10-052015-06-30Ali Z, Shahzadi K, Sidra S, et al., Seasonal variation of particulate matter in the ambient conditions of Khanspur, Pakistan, The Journal of Animal and Plant Sciences, Volume 25, Issue 3 Supp. 2, 2015, pp. 700-7051018-7081http://www.thejaps.org.pk/docs/Supplementary/v-25-sup-2/65.pdfhttp://dspace.lib.cranfield.ac.uk/handle/1826/10662Concentrations of particulate matter tend to vary with shifting seasons. Levels of particulate matter were monitored during the summer and winter season in Khanspur, a high altitude tourist resort in Pakistan. A DustTrak DRX (Model 8533, TSI Inc.) and Kestrel 4500 Pocket Weather Tracker (Nielsen- Kellerman) were installed at selected site in Khanspur and run for 24 hours. During summer the 24- hour average concentrations of PM1, PM2.5, PM4, PM10 and PMTotalwere 96 ± 26.42, 106± 29.02, 118± 33.3, 163± 52.5 and 209 ± 79.5 µg/m³ while these were considerably lower during the winter season for the same size fractions (62 ± 48.6, 63± 49.3, 63 ± 49.5, 65.33 ± 50.06 and 66.96 ± 50.78µg/m³). A one way ANOVA was applied on the obtained data and it was concluded that seasons have a substantial impact upon PM concentrations. Moreover, this study provides evidence that seasonal variation of particulate matter is influenced by meteorological parameters.enseasonal variationparticulate pollutionmeteorological parametershigh altitudeKhanspurPakistanArticle