UCI Air Quality Roadside Multisensor Dataset

Overview

The UCI Air Quality dataset contains real-field measurements from an air quality chemical multisensor device installed at road level in a significantly polluted area within an Italian city.[web:46][web:53][web:77]

Data Collection

• Data were recorded hourly from March 2004 to February 2005, yielding 9,358 time-stamped instances.[web:46][web:53][web:77]
• The device consisted of an array of 5 metal-oxide gas sensors plus reference analyzers for several pollutants.[web:46][web:53]
• The monitoring station captured both pollutant concentrations and basic meteorological variables.[web:53][web:77]

Variables

• Date (DD/MM/YYYY) and Time (HH.MM.SS) for each observation.[web:46][web:53]
• Reference analyzer concentrations for CO, Non-Methanic HydroCarbons (NMHC), and Benzene (C6H6).[web:46][web:53][web:77]
• Sensor responses PT08.S1–PT08.S5 (tin, indium, tungsten oxides etc.) nominally targeting CO, NMHC, NOx and O3.[web:46][web:53]
• Meteorological variables including Temperature, Relative Humidity, and Absolute Humidity.[web:46][web:53][web:77]

Typical Use Cases

• Time-series modeling and forecasting of urban air pollution levels using real sensor data.[web:56][web:59][web:77]
• Anomaly detection and sensor drift analysis in deployed gas sensor networks.[web:46][web:53]
• Environmental IoT benchmarking and data quality assessment for low-cost air quality devices.[web:46][web:53]