Toronto is considered to be one of the safest cities in North America, so it’s deemed unlikely that you will run into any issues during your time there. Toronto is also relatively safe at night, and locals are generally very polite and quite helpful. Exploring the tourist attractions at night should not be a problem.
But as with any populous city, crime isn’t completely non-existent. Take precautions to ensure that you don’t encounter any problems. Remain vigilant and keep an eye on your belongs. Avoid poorly lit streets and always trust your intuition. Lastly, never carry large quantities of cash.