One of the characteristics of autumn is its deep blue sky.
Here are a few contributing factors.
As air temperatures cool, there's less moisture in the air,... which leads to little to no clouds or haze to block the sunlight.
With the sun no longer directly overhead in this time of the year, the sun's angle allows us to see more blue than red or green hues.
Rain clouds are developing in the northwest of the peninsula,... wetting mostly the central areas throughout the evening.
The precipitation will expand down the southern and western areas of Gangwon-do province as well,... bringing down 5 to 10 millimeters of rain up until dawn on Tuesday.
Air quality level is within bearable levels but we should keep a close watch as levels may fluctuate.
Fine dust particles could mix with the rain so make sure to have your umbrellas ready and wash your hands, face and feet as soon as you get home.
The rain should mostly dissipate by the morning.
Seoul gradually brightens up with a morning low of 10 degrees Celsius, Daegu at 9 while Busan and Jeju get a milder start to the day at 15 degrees.
Into the afternoon,... sunnier conditions are in store for Seoul with a high of 16 degrees, while Daegu tops 20 and Busan 21.
After this rain, clear skies will dominate the forecast throughout the rest of the week,... with chilly mornings and warm afternoons.
I'll leave you with the weather conditions around the world.