There are 512 patients on trolleys or on wards waiting for admission to a hospital bed, according to figures from the Irish Nurses and Midwives Organisation.
The figures are down on the same day last year, where there were 643 patients waiting for admission to a hospital bed.
The worst affected hospitals are University Hospital Limerick with 69 patients waiting; Cork University Hospital with 52 and University Hospital Galway with 43.
There are five children waiting for admission to a hospital bed, two at Our Lady's Children's Hospital, Crumlin, and three at Temple Street.
The Health Service Executive's 'TrolleyGar' figures put the number waiting at 397, down over 14% on its figures for the same day last year.
The HSE figures only cover emergency departments.