A significant deterioration in air quality has occurred, with readings now in the unhealthy range across all areas. The central region is most affected, with a notable reading of 154. This marks a notable milestone, as it has been since 2019 that such poor air quality has been recorded everywhere.

Further details are available from the source. The situation is unusual, as it has been some time since air quality was this poor in all regions.

The last time this happened was September 2019, when air quality also entered the unhealthy range everywhere.