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Table 1 Meteorological analysis of the relationship between factors associated with AQI parameters

From: Air quality index variation before and after the onset of COVID-19 pandemic: a comprehensive study on 87 capital, industrial and polluted cities of the world

Dependent AQI-variables

Wind speed (m/s)

Temperature (°C)

Relative humidity (%)

β (SE)

β (SE)

β (SE)

AQI-PM2.5

− 3.75 (3.89)

0.59 (0.59)

− 1.55 (0.47)**

AQI-PM10

− 1.57 (2.49)

0.57 (0.37)

− 0.88 (0.30)**

AQI-SO2

− 0.07 (0.24)

< 0.01 (0.04)

− 0.10 (0.03)**

AQI-NO2

− 0.06 (0.46)

0.10 (0.07)

− 0.11 (0.06)

AQI-CO

0.96 (0.54)

0.13 (0.07)

− 0.08 (0.06)

AQI-O3

− 0.42 (0.75)

0.10 (0.12)

< 0.01 (0.09)

  1. **P < 0.001