Ninety percent of all ozone is concentrated in the stratosphere, forming the ozone layer.
The ozone layer absorbs most of the ultraviolet rays harmful to life, and plays an important role in protecting lives on Earth.
However, when ozone enters the human body through respiration, it has an adverse effect.
Since ozone can't be blocked by protective masks, I advise you to stay indoors during hot, sunny days.
Hello, I'm Michelle Park here with the latest weather update.
We won't have to worry about the sun, tomorrow as a lot of regions are set for rain.
In fact, this front will affect the southern areas all throughout the weekend, while leaving Beijing and Tokyo with gray skies.
Jeju Island will see rain of up to 200 millimeters while Jeollanam-do and the Gyeongsang-do Provinces can expect 20 to 60 millimeters.
The central region including the capital will see sporadic showers over the weekend bringing down 10 millimeters at the most.
Although the daytime highs are cooling down, the morning lows will stay the same or be higher.
The morning will kick off between 16 to 18 degrees Celsius, Seoul beginning at 18 degrees.
Saturday afternoon will be cooler than today but still higher than the seasonal average.
Seoul will top out to 26 degrees while the southern regions are much cooler with continuous rain.
Rain is in store until next Monday, but after that we can expect hot weather.
I'll leave you with the weather conditions around the world.