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Relative risk (RR) and cumulative RR (95% confidence interval [CI]) of daily confirmed COVID-19 cases with a unit increase in mean temperature (Tave), temperature humidity index (THI), index of wind effect (K), air quality index (AQI), PM2.5, PM10, NO2, and SO2 in Shanghai. Units are 1 °C for Tave, 1 unit for THI, 10 units for K and AQI, 10 μg/m3 for PM2.5, PM10, and NO2, and 1 μg/m3 for SO2
