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

Table 2

Correlation coefficient and the regression equation between temperature and pollutants.

Season	Temperature range in °C	SO2		NOx		RSPM		SPM
		𝑟^2	Equation	𝑟^2	Equation	𝑟^2	Equation	𝑟^2	Equation
Monsoon season	21–33.2	0.11	SO2 = −0.11𝑇+14.25	0.01	NOx = −0.042𝑇+17	0.53	RSPM = 8.25−115.9	0.45	SPM = 13.55−189.7
Post-monsoon season	21–33.4	0.32	SO2 = 0.69𝑇−5.3	0.51	NOx = 0.90𝑇−4.85	0.03	RSPM = −1.41𝑇+146.2	0.16	SPM = −6.15𝑇+382.1
Summer season	29–37.2	0.25	SO2 = −2.26𝑇+88.18	0.15	NOx = −2.25𝑇+76.63	0.24	RSPM = 19.47−539.2	0.26	SPM = 29.6𝑇−767.51
Pre-monsoon season	25.2–36.2	0.17	SO2 = 0.56𝑇−4.978	0	NOx = 0.0435𝑇+17.0	0.25	RSPM = 15.2𝑇−379.9	0.38	SPM = 32.9𝑇−821.6