Indoor and ambient air pollution dataset using a multi-instrument approach and total event monitoring

This dataset comprises 19 subsets. Each subset measures a different parameter or is produced by a different sensor provider. The measurement period for this dataset was from October 11, 2024, to October 31, 2024, and the measurement interval depends on the type of parameter being measured, ranging from 1 second to 15 minutes. The dataset includes six indoor low-cost sensor providers with their respective measuring sensors. Three of these providers had only one sensor at the location, while one had 16 sensors, and the other two had 4 and 2 sensors, respectively. Human presence was monitored using a camera and a motion detection sensor. Window and door opening and closing were monitored using Xiaomi Door/Window sensors. In addition to the indoor low-cost sensors, the location was equipped with reference sensing units that were calibrated to the measuring station. Furthermore, outdoor low-cost sensors were also used. Specifically, one was a low-cost sensor, and the other was a mid-range sensor in terms of pricing. This dataset also includes black carbon and CPC data. The CPC data was collected using an instrument that was used both inside and outside during the study. A camera was set up on the balcony to monitor the road in front of the house, so traffic data is also included in the dataset. Additionally, on-site measuring data from the Croatian Meteorological and Hydrological Service was made available in this dataset, sourced from the two nearest locations to the measuring site, as well as satellite data from the Climate Data Store. Every single parameter is detailed in the Measurement_metadata_description file, which is integrated into the data.zip archive. Every experiment conducted alongside these measurements is documented with a timestamp in the experiments.json file, which is also located in the data.zip archive. Every pollutant accurately measured with low-cost sensors is now included along with resolution details. All information can be found in the file Low_cost_sensor_accuracy.xlsx."