The crime rate here is low when compared to other destinations across Mexico. With that said, practice common sense when traveling. Keep valuables close, be mindful of people passing you, don’t wander solo at night, and pay attention to your surroundings.
The closest two airports to San Miguel de Allende are BJX in León Del Bajio (48 miles away, 1.5 hr drive) and QRO in Santiago de Querétaro (41 miles away, 1.25 hr drive). Both service direct flights in the U.S. with airlines like Volaris, Aeromexico, and United Airlines.
Taxis are everywhere and readily available and require cash. Ubers are easily accessible as well and are used the same way you use them now on the app. Walking is the best way to absorb the city! Bring comfortable shoes.
Average daily high temperature for the cool season is below 74 and the evening gets chilly so its best to bring layers and something toasty for evening. The air is dry so sunscreen is recommended. If elevation affects you make sure to keep Dramamine handy.