Coal plants are already covered by air pollution measurements.
Coal power plants, even with emission regulations, are very dirty as far as radioactive emissions are concerned.
Nobody is denying that or excluding the possibility to add coal plants to such a map. Excuse me for not adding a complete, prioritized list of features to my question. I find it disturbing that some people start insinuating "humorously" that someone is an "anti-vaxxer" because he's considering functionality for people who - for whatever reason - don't like living near nuclear plants. It's this kind of derailing that makes discussions on the Web unbearable sometimes...