the combined maximum standard per diem rate is $ 140 the combined rates for the listed locations range from a low of $ 140 off season for several locations to a high of $ 428 peak season for telluride coloradohe conus per diem allowance for an area has three components a lodging allowance a meals allowance and an incidental expense allowance m ie most of the conus approximately 2600 counties are covered by the standard conus per diem rate of $ 140 $ 89 lodging $ 51 meals and incidental expenses