Concentrations of Criteria Air Pollutants measured by the MoCaALTAMA Network

This dataset contains concentrations of six criteria air pollutants — PM₁₀, PM₂.₅, SO₂, NO₂, and O₃— measured at four air quality monitoring stations within the MoCaALTAMA Network, located in key locations such as the Madero Refinery (AQS-MR), the Altamira Industrial Corridor (AQS-ACI), Puente Tampico (AQS-PT), and Tampico Airport (AQS-TA) in Tamaulipas, Mexico. The performance, accuracy, and data reliability of the factory- calibrated air quality stations (AQS) were assessed by co-locating one AQS with a reference station from the Mexico City Air Quality Office, at the Institute of Atmospheric Sciences and Climate Change (Universidad Nacional Autonoma de Mexico, UNAM) and comparing the data correlation to be at least R2=0.75. Data coverage periods are from October 2023 to June 2025 for stations AQS-ACI, AQS-MR, and AQS-TA, and from October 2023 to August 2024 for station AQS-PT. Pollutant concentrations are reported in micrograms per cubic meter (µg/m³). This dataset was collected at one-minute intervals using Libelium-based loT sensors, and it can be used in accordance with the guidelines established by the Mexican Official Standard NOM-172-SEMARNAT-2019, which defines the procedures for calculating and communicating the Air Quality Index and associated health risks. To access this procesed data , please contact Dr. Felipe Caballero at [e-mail] or M.I.A. Mireya del Socorro Ovando Rocha at [e-mail]. This dataset supports air quality assessments, temporal trend analyses, and environmental modeling in the conurbated area of southern Tamaulipas, including Tampico, Madero, and Altamira. The data were collected using Libelium-based air quality sensors and quality-controlled to ensure consistency.