This morning (Tuesday Jan 14) the organising committee has been assessing the conditions.
It has decided that games will proceed however at shorter overs and that Umpires are to assess the conditions and determine fitness for play. Thus games will be reduce in line with match conditions relating to rule 14.
Of course associations are advised to minimise time in the open, including pre-match warmups. Take advantage of rotating players in the field.
Should players become disoriented or have difficulty in breathing, they should be rested inside. P2 Face masks may be worn for additional protection.
Those who may suffer from asthma should have their asthma pump available at all times.
Seek urgent medical advice should symptoms become more acute.