What does this article add?
Short-term (14 days) air pollutants exposure seems minimally clinically relevant.
Different therapies could potentially influence the link between disease activity and air pollution.
Keywords : rheumatoid arthritis; air pollution; particulate matter; disease activity
Funding details: No specific funding was received from any bodies in the public, commercial or not-for-profit sectors to carry out the work described in this article.
Disclosure statement: The authors declare no conflicts of interest
Data availability statement : data of the Regional Environmental Protection Agency are available at www.arpalombardia.it/Pages/Aria/Modellistica/I-sistemi-modellistici-in-ARPA.aspx