This study assesses Portugal's progress towards achieving the Sustainable Development Goal (SDG) target 3.4, which aims to reduce premature mortality from noncommunicable diseases (NCDs) by one-third by 2030. Using data from the Statistics Portugal online database, the study employs linear and quadratic projections with weighted and non-weighted linear and exponential regression models to project future trends. The results indicate that Portugal is on track to meet the target for premature mortality due to diabetes, but there is a 50% probability that the desired reduction in premature mortality from respiratory diseases will be achieved. However, premature mortality from cardiovascular diseases and malignant tumors is not decreasing fast enough to meet the target by 2030. The study concludes that while Portugal is making progress, additional actions are needed to ensure the goal is accomplished. Key strategies include continued efforts in national health plans, legislative measures, and public health campaigns to address risk factors such as harmful alcohol consumption, physical inactivity, tobacco use, and unhealthy eating.This study assesses Portugal's progress towards achieving the Sustainable Development Goal (SDG) target 3.4, which aims to reduce premature mortality from noncommunicable diseases (NCDs) by one-third by 2030. Using data from the Statistics Portugal online database, the study employs linear and quadratic projections with weighted and non-weighted linear and exponential regression models to project future trends. The results indicate that Portugal is on track to meet the target for premature mortality due to diabetes, but there is a 50% probability that the desired reduction in premature mortality from respiratory diseases will be achieved. However, premature mortality from cardiovascular diseases and malignant tumors is not decreasing fast enough to meet the target by 2030. The study concludes that while Portugal is making progress, additional actions are needed to ensure the goal is accomplished. Key strategies include continued efforts in national health plans, legislative measures, and public health campaigns to address risk factors such as harmful alcohol consumption, physical inactivity, tobacco use, and unhealthy eating.