Over 2,000 people were recorded as being on trolleys or chairs at local hospitals last month.
Both Sligo and Galway University Hospital featured in the top five most overcrowded facilities nationwide in November.
Over 12,624 patients have been left without a bed in Irish hospitals in November according to the INMO Monthly TrolleyWatch figures.
Sligo University Hospital had the fourth highest total in the country with 783 patients waiting at the ED for treatment last month.
That's a rise of 83 at the North West facility in the space of four weeks.
Galway University Hospital has recorded the fifth highest level of overcrowding nationally with 703 people waiting on a bed at the hospital in November.
Figures for other hospitals' EDs in this region in November were broadly similar to 2021 numbers with 225 and 298 waiting on trolleys last month in Mullingar and Portiuncula respectively.
However Portiuncula did record an increase of almost 100 people on October's figures.
At Tullamore hospital 58 patients waited on a trolley or chair last month.
Over 560 children under the age of sixteen were on trolleys across the country in the month of November, the worst month for paediatric overcrowding on record.
INMO General Secretary Phil Ní Sheaghdha says the INMO is seeing acute problems with hospital overcrowding in the Midwest and along the Western seaboard.
She says the organisation do not want to be put in a position where care is compromised due to inaction from Government and the HSE.