Daejeon City to Operate 'Ozone Alert System' from April to October

On the 15th, Daejeon City announced that it will implement the ozone alert system for five months from that day until October 15.

The ozone alert is issued as a cautionary alert when the 1-hour average concentration is 0.12 ppm or higher, a warning when it is 0.3 ppm or higher, and a serious warning when it is 0.5 ppm or higher.

During the operation period of the ozone alert system, the city, the Health and Environment Research Institute, and five autonomous districts will operate alert situation rooms. The region will be divided into two zones: East (Dong-gu, Jung-gu, Daedeok-gu) and West (Seo-gu, Yuseong-gu) to monitor ozone levels and issue alerts when situations occur.

When an alert is issued, the situation will be communicated via fax and text messages to related organizations such as media outlets and schools, as well as to subscribers of the air pollution alert text message service.

Additionally, alerts will be disseminated to citizens through SNS and air quality electronic display boards installed in the region.

Ozone is a secondary pollutant generated by photochemical reactions when nitrogen oxides and volatile organic compounds emitted from vehicles and workplaces react with sunlight. It is known to irritate sensory organs such as the eyes and nose, and prolonged exposure to high concentrations of ozone can weaken airway and lung functions.

Meanwhile, in Daejeon, ozone cautionary alerts were issued once each in 2017 and 2018.

This content was produced with the assistance of AI translation services.