It's been a very warm first day of summer, and anyone catching a train in Sydney is sure to have felt the heat.
The NSW Government has come under fire for putting more non-air conditioned trains into service, which is claimed to be due to the spike in passengers opting to catch the train.
These trains, which have been brought back onto the lines, are mostly appearing on western and south-western lines.
Temperatures are expected to reach over 40C this summer, which feels even hotter during the peak-hour squash on these services.
NSW Minister for Transport Andrew Constance described this as "not preferable" but necessary due to the new timetable.