Hi,
This is actually an API, so you can query it to extract data easily. Just by changing the last part of the URL from "html" into "csv" I could get the data in R in just one line of code.
myData = read.csv("https://danepubliczne.imgw.pl/api/data/synop/format/csv")
head(myData)
#> id_stacji stacja data_pomiaru godzina_pomiaru temperatura
#> 1 12295 Białystok 2021-11-11 19 2.9
#> 2 12600 Bielsko Biała 2021-11-11 19 3.4
#> 3 12235 Chojnice 2021-11-11 19 6.1
#> 4 12550 CzÄ\231stochowa 2021-11-11 19 3.6
#> 5 12160 ElblÄ…g 2021-11-11 19 4.8
#> 6 12155 Gdańsk 2021-11-11 19 7.9
#> predkosc_wiatru kierunek_wiatru wilgotnosc_wzgledna suma_opadu cisnienie
#> 1 2 240 97.2 0 1020.9
#> 2 2 290 95.8 0 1026.1
#> 3 4 240 97.9 0 1021.8
#> 4 1 200 89.2 0 1025.0
#> 5 6 230 97.2 0 1020.3
#> 6 3 230 90.1 0 1019.7
Created on 2021-11-11 by the reprex package (v2.0.1)
This won't work for regular websites, but does for this particular API
PJ