Table 2: Interannual and intraseasonal correlation coefficient between PM2.5, and meteorological parameters (wind speed: WS, temperature: Temp., and relative humidity: RH) in Delhi during 2007 to 2009.

200720082009Overall
PM2.5PM2.5PM2.5PM2.5

WS−0.30−0.56−0.30−0.38
Temp.−0.60−0.54−0.56−0.59
RH0.030.11−0.010.14

WinterSummerMonsoonPostmonsoon
PM2.5PM2.5PM2.5PM2.5

WS−0.50−0.16−0.09−0.58
Temp.−0.58−0.02−0.11−0.51
RH0.19−0.48−0.180.35