In Latin American cities, economic activities generate environmental contamination directly or indirectly, one of the most important being noise pollution. The present study focuses on evaluating the environmental noise of Cevallos Avenue in Ambato City, taking into account that this location presents the most congestion of the city, both vehicular and pedestrian, and is one of the most important, due to the commercial activities and entertainment. Ambato is the tenth most populous city in Ecuador, with 175,000 inhabitants, and is located in the center of the inter-Andean region. Monitoring of the sound pressure level at four critical points of affectation (PCA) of the avenue was carried out, where measurements of noise emitting sources (FER), fixed and mobile, were made. This was carried out through four samplings at each point, spread over two days, and lasting for fifteen minutes each, following the methodology presented in Annex 5 of Book VI of the Unified Text of Secondary Legislation of the Ministry of the Environment (TULSMA, for its acronym in Spanish), regulations applied in Ecuador. The sound level meter used was CESVA brand, model SC310, with year of calibration 2017. To perform the measurements, this equipment was placed on a tripod located at a height equal to or higher than 1.5 m from the ground, thus placing the microphone towards the sound source with an inclination of 45 to 90 degrees, on the horizontal plane. The resulting values were compared with other works carried out in the study area, and it was determined that 95% does not comply with the maximum permissible limits presented in the current Ecuadorian environmental regulations, both in day and night periods.