Long term measurements of PM1, PM2.5, PM10 and NO2 in open-air at Gdansk (Poland) area using low-cost sensors together with the reference results

The measurements results of open-air measurements made using the following low-cost sensors: particulate matter (PM) sensor SPS30 from Sensirion, NO2 electrochemical sensor SGX-7NO2 from SGX Sensortech, NO2 electrochemical sensor 7E4-NO2 from SemaTech, compact MOS air quality sensor MiCS 2714 from SGX Sensortech, BME280 (Bosch) environmental sensor capable of measuring ambient temperature and humidity together with atmospheric pressure mounted on sensors’ PCB near the NO2 sensors, BME280 environmental sensor placed at the very edge of the enclosure to measure the parameters of air surrounding the system. The low-cost sensors were allocated next to the respective reference stations, and their readings were recorded at the same points of time (every hour). The reference data has been acquired from ARMAS’s foundation stations allocated in the city of Gdansk, Poland. The measurement campaign has been spanned over the period of five months, between March and August 2023.