Molecular dynamics (MD) simulations can provide detailed insights into monolayer phase behavior and mechanical properties on molecular scales, which are often inaccessible to experiments. However, most existing force fields struggle to reproduce DPPC pressure-area isotherms even qualitatively. This limitation has been attributed to the inability of water force fields to accurately capture the air-water surface tension. All-atom water models, such as SPC, SPC/E, 12 TIP3P, and TIP4P, as well as coarsegrained models like MARTINI, significantly underestimate air-water surface tension. Among atomistic models, OPC4 achieves accurate air-water surface tension, while TIP4P/2005 has shown the best performance among other models. Meanwhile, the lipid force fields (Berger, CHARMM, Slipids, LJ-PME 22 etc ) have also some effects on the P-A isotherm results. Figure -c demonstrates that the results using TIPnP water models in conjunction with various lipid force fields perform poorly; TIP4P/2005 with Berger lipids , CHARMM-specific TIP3P (TIPS3P) water model with LJ-PME, as well as TIP3P and Slipids, yield unphysically large negative values of surface pressure. The OPC4 model, provides the best performance among atomistic models, showing near-quantitative agreement with experimental results. All-atom simulations are computationally expensive and generally unsuitable for studying lipid monolayer phases, which exhibit 2D phase behavior and large-scale domain structures. The coarse-grained (CG) forcefields, however, have also struggled to accurately predict DPPC P-A isotherms, including the MARTINI forcefield which underestimate the water surface tension by 60%. Other CG water models such as CSJ and BMW used with MARTINI lipid force field have also failed produce correct P-A isotherms. CSJ model, however, reproduced water-surface tension accurately, while BMW substantially overestimated it. Another force-field developed by Klein' group, the SDK forcefield, provided isotherms at 323K at larger values of 𝑎 𝐿 in good agreement with experimental data (Figure ). While it is apparent that efficient computational approaches for studying properties at the air-water interface are lacking, it is also evident that the accuracy of experimental isotherms is compromised by technical limitations. This means that a force field can only be validated within a certain range of experimental values shown in Figure . One of the most commonly used and computationally efficient coarse-grained methods is the dissipative particle dynamics (DPD) approach. However, standard DPD cannot simulate vapor-liquid coexistence and consequently, cannot be used for surfactant systems at airwater interface. To overcome this limitation, many body dissipative particle dynamics (MDPD) was suggested. However, MDPD remains relatively unpopular due to its complex many-body framework, though recent attempts to apply it to DPPC monolayers have shown very promising results. We recently developed a novel DPD gas model to use with standard DPD, in which the gas phase is represented by fictitious beads that interact with other beads through an exponential potential. This approach, which we refer to as WSN (Wang-Santo-Neimark), successfully simulated the adsorption of CTAB (cetyl trimethyl ammonium chloride) surfactants at the air-water interface, demonstrating excellent agreement with experimental isotherms. In the current work, we develop a DPD approach to simulate phospholipid monolayers and bilayers across a range of temperatures, consistently reproducing their interfacial and mechanical properties. We develop new DPD model for DPPC with systematic parameterization, extend our WSN model to DPPC lipids, and devise a temperature scaling methodology that allows DPD systems to be simulated across various temperatures with parameters transferable across temperature changes. Importantly, this results in a coarse-grained WSN water model that accurately reproduces air-water surface tension over a temperature range. Using our approach, we simulate DPPC monolayers and bilayers, successfully replicating temperature-dependent interfacial phase behavior and mechanical properties in near-quantitative agreement with our experimental results as well as literature.