Display omitted •Green co-solvent systems enhanced cellulose depolymerization and product yield.•Maximum 32% of levulinic acid (LA) yielded in GVL/H2O solvent at 200 °C.•GVL/H2O system maintained high availability of soluble sugars.•Acetone/H2O solvent generated 17 Cmol% of LA at a lower temperature (180 °C)•Higher temperature induced polymerization of sugars in acetone/H2O solvent. Lignocellulosic wastes constitute a significant portion of the municipal solid waste, which should be valorised for the synthesis of value-added chemicals to achieve circular bioeconomy. This study evaluates the use of γ-valerolactone (GVL) and acetone as green co-solvents to produce levulinic acid (LA) from lignocellulosic paper towel waste at different temperatures using dilute H2SO4. At the highest reaction temperature (200 °C), H2O-only system achieved ~15 Cmol% of LA at maximum. while GVL/H2O and acetone/H2O co-solvent systems enhanced the depolymerisation of paper towel waste and the subsequent conversion to LA, with the highest yield amounted to ~32 Cmol%. Acetone/H2O solvent system generated ~17 Cmol% LA at a lower temperature (180 °C), while higher temperature induced polymerisation of soluble sugars and intermediates, hindering further conversion to LA. In contrast, the availability of soluble sugars was higher in the GVL/H2O system, which favoured the production of LA at higher temperatures.