There is a weather effect where it rains more often at weekends* because particulates build up and give water vapor somewhere to nucleate. No pollution, no particulates, less rain.
*Strictly speaking it’s the other way round, it rains less on weekdays as it’s a delayed effect of less pollution, if you have enough pollution it rains late in the week and all through the weekend until the particulates are diminished then stops on Monday.
Certainly seems brighter than normal, even in a high pressure you normally get a haze as the pollution and water vapor can’t rise, and after weeks of it the smog and pollution should really be building up by now? But instead it’s blue sky from horizon to horizon.