Last updated 19/03/2021 - 08:23
The proportion of good air quality increased at the Mannerheimintie and Tikkurila measuring locations
In October–December, the proportion of periods of good air quality increased slightly at the Mannerheimintie and Tikkurila measuring points in comparison to the corresponding period in the previous year. On the other hand, at the Leppävaara measuring location, the proportion of good air quality decreased slightly and that of satisfactory air quality increased.
In October–December, the average proportions of periods of good air quality totalled 79.8 per cent in Tikkurila, 77.7 per cent in Leppävaara and 77.6% on Mannerheimintie. The air quality was mainly satisfactory during other periods.
In Leppävaara and Tikkurila, the air quality has been mostly good since 2018. In Leppävaara and Tikkurila, the air quality has been good for most of the time since 2015. Street dust decreases the air quality especially in the spring.