Tossup; Winter in that valley can be inversion time, i.e. trapped in a stagnant pool of scarcely-breathable soup. The social vibe around Christmas
is special, but you can experience that in many other less asphyxiating towns of the Bajío.
If you're considering air quality as a governing factor, summer rains tend to clean things up, and as SoulPatch notes, Easter traditionally reduces
traffic substantially. |