Looking at a webcam you can see the real light and weather of a certain place. There are two webcams recently known to me in Korat:
Mike Newman's webcam image is updated if something actually moves but will be refreshed every two minutes. This camera is located in Tambon Baan Mai, about ten kilometers west of central Korat (Nakhon Ratchasima), Thailand. (About 250 K east northeast of Bangkok.)
The camera is active now and then, from about 6:00 AM, local time, until dark, so keep on checking.
Then there is one in Amphoe Pak Chong with weather data, that can play a time lapse.