yesterday (observation)	currently (observation)	today (forecast)	tomorrow (forecast)	the day after tomorrow (forecast)	two days later (forecast)
Belgium	poor - 6	poor - 6	moderate - 5	fairly good - 4	fairly good - 4	moderate - 5
Flanders	poor - 6	poor - 6	moderate - 5	fairly good - 4	fairly good - 4	moderate - 5
Brussels	very poor - 7	very poor - 7	moderate - 5	moderate - 5	moderate - 5	moderate - 5
Wallonia	moderate - 5	moderate - 5	moderate - 5	fairly good - 4	fairly good - 4	fairly good - 4