weather radar for Mexico?

Weather RADAR is dependent on the meteorological RADAR states operated by each individual country. US-based weather media outlets usually use a combination of publicly available RADAR (METARS, NWS, airports, etc.) and Doppler RADAR stations operated by their affiliated stations. I have been a member of Weather Underground for years (had personal weather stations that fed data to them) and really like their weather reporting and forecasting tools. Even Weather Underground, however, does not have access to Doppler RADAR for Mexico (beyond the areas that US reporting stations in border areas provide incidentally). You're probably going to have to settle for analyzed satellite data such as this from CNN:

CNN link

Rob