Air quality is approaching unhealthy levels, with the 1-hour PM2.5 reading reaching 107. This measurement indicates a significant level of particulate matter in the air.

Further information on this development is available from AsiaOne. The source provides details on the current air quality situation.

The 1-hour PM2.5 reading of 107 suggests that air quality is nearing the unhealthy range, prompting concern about potential health impacts. For more specific information, readers can refer to the AsiaOne report.