Open Data Insight of the Day

In January 2026, the air quality in Binningen was predominantly good, with 19 days classified as KBI = 1, indicating low pollution levels. There were 12 days with KBI = 2, representing moderate pollution, and no days with KBI levels of 3 or higher, which would indicate significant pollution. The Kurzzeit-Belastungs-Index (KBI) is a composite measure that integrates various air pollution factors into a single index, facilitating the assessment of air quality. The mean concentrations for the pollutants were 28.2 µg/m³ for ozone, 24.9 µg/m³ for nitrogen dioxide, and 14.3 µg/m³ for particulate matter (PM10). The maximum concentrations recorded were 82.2 µg/m³ for ozone, 60.3 µg/m³ for nitrogen dioxide, and 86.2 µg/m³ for PM10. These values are detailed in Table 1, with regulatory thresholds provided in Table 3.

When comparing January 2026 to previous years, the air quality was notably better, with the highest number of days (19) achieving KBI = 1, ranking first among the last eight years. The number of days with KBI = 2 was relatively low, ranking second. The maximum concentration of nitrogen dioxide ranked fifth, while the mean concentration ranked second, indicating a slight increase compared to previous years. Ozone levels were lower, with both mean and maximum concentrations ranking seventh. For PM10, the maximum concentration ranked second, while the mean concentration ranked sixth. The monthly average and maximum values for January are reported in Table 2 and are illustrated in Figures 1 to 3.