To cite package ‘ubair’ in publications use:

  Franke R, Voss I (2025). _ubair: Effects of External Conditions on
  Air Quality_. R package version 1.1.0,
  <https://CRAN.R-project.org/package=ubair>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ubair: Effects of External Conditions on Air Quality},
    author = {Raphael Franke and Imke Voss},
    year = {2025},
    note = {R package version 1.1.0},
    url = {https://CRAN.R-project.org/package=ubair},
  }