Dependent variable Average # of new cases
Own city Other cities
1-week lag 2-week lag 1-week lag 2-week lag
(1) (2) (3) (4)
Own City
Maximum temperature, 3-week lag 0.200*** − 0.0431 0.564 − 2.022***
(0.0579) (0.0503) (0.424) (0.417)
Precipitation, 3-week lag − 0.685 − 0.865* 4.516 − 1.998
(0.552) (0.480) (4.045) (3.982)
Wind speed, 3-week lag 0.508** 0.299 − 0.827 3.247*
(0.256) (0.223) (1.878) (1.849)
Precipitation × wind speed, 3-week lag − 0.412** 0.122 − 1.129 − 2.091
(0.199) (0.173) (1.460) (1.437)
Maximum temperature, 4-week lag 0.162*** 0.125** 1.379*** 1.181***
(0.0560) (0.0487) (0.410) (0.404)
Precipitation, 4-week lag 0.0250 − 0.503 2.667 8.952***
(0.440) (0.383) (3.224) (3.174)
Wind speed, 4-week lag 0.179 0.214 − 1.839 1.658
(0.199) (0.173) (1.458) (1.435)
Precipitation × wind speed, 4-week lag − 0.354** − 0.0270 1.107 − 2.159**
(0.145) (0.126) (1.059) (1.043)
Other cities, weight = inverse distance
Maximum temperature, 3-week lag − 0.0809*** − 0.00633 0.0520 1.152***
(0.0203) (0.0176) (0.149) (0.146)
Precipitation, 3-week lag 4.366*** − 2.370*** 17.99*** − 72.68***
(0.639) (0.556) (4.684) (4.611)
Wind speed, 3-week lag 0.326*** − 0.222** − 1.456 − 11.02***
(0.126) (0.110) (0.926) (0.912)
Precipitation × wind speed, 3-week lag − 1.780*** 0.724*** − 6.750*** 27.73***
(0.227) (0.197) (1.663) (1.637)
Maximum temperature, 4-week lag − 0.0929*** − 0.0346* − 0.518*** 0.0407
(0.0220) (0.0191) (0.161) (0.159)
Precipitation, 4-week lag 3.357*** − 0.578 46.57*** − 25.31***
(0.504) (0.438) (3.691) (3.633)
Wind speed, 4-week lag 0.499*** 0.214** 4.660*** − 4.639***
(0.107) (0.0934) (0.787) (0.774)
Precipitation × wind speed, 4-week lag − 1.358*** − 0.0416 − 17.26*** 8.967***
(0.178) (0.155) (1.303) (1.282)
F statistic 11.41 8.46 19.10 36.32
p value 0.0000 0.0000 0.0000 0.0000
Observations 12,768 12,768 12,768 12,768
Number of cities 304 304 304 304
# cases in Wuhan Yes Yes Yes Yes
Contemporaneous weather controls Yes Yes Yes Yes
City FE Yes Yes Yes Yes
Date FE Yes Yes Yes Yes
City by week FE Yes Yes Yes Yes