Influence of Temperature, Relative Humidity and Seasonal Variability on Ambient Air Quality in a Coastal Urban Area

Table 3

Correlation coefficient and the regression equation between humidity and pollutants.

Season	Humidity range in %	SO2		NOx		RSPM		SPM
		𝑟^2	Equation	𝑟^2	Equation	𝑟^2	Equation	𝑟^2	Equation
Monsoon season	79–96%	+13	SO2 = 0.109𝐻+1.42	0	NOx = −0.027𝐻+20.6	−51	RSPM = −7.29𝐻+115.9	−41	SPM = −11.72𝐻+1231
Post-monsoon season	64–98%	+35	SO2 = 0.7947𝐻−52.76	+5	NOx = 0.330𝐻−8.01	−1	RSPM = −0.272𝐻+130.8	−22	SPM = −7.894𝐻+872.9
Summer season	44–89%	+7	SO2 = −0.1006𝐻+5.73	0	NOx = −0.044𝐻+22.8	−16	RSPM = −2.68𝐻+297.4	−24	SPM = −4.968𝐻+572.1
Pre-monsoon season	54–88%	0	SO2 = 0.029𝐻−9.48	0	NOx = 0.229𝐻+16.23	−8	RSPM = −2.08𝐻+224.6	−3	SPM = −2.458𝐻+336.5