Rialto is a relatively safe city. However, like any place, it is not without its risks. Crime rates are average in comparison to other US cities, but it's always important to stay vigilant, especially at night. Learn to trust your instincts; if a situation or place makes you feel uncomfortable, find an alternative. Staying in well-lit, populated areas is a good rule for safety. Always let someone know your plans and regular check-ins are advised. Despite these precautions, most tourists do not experience any issues during their stay.