Related Resources: physics

### Viscosity of Air, Dynamic and Kinematic

Heat Transfer Engineering
Thermodynamics
Engineering Physics

Viscosity of Air, Dynamic and Kinematic

• Specific Heat of Air
• Density of Air
• Specific Heat of Air
• Thermal Conductivity of Air
• Thermal Diffusivity of Air
• Dynamic Viscosity of Air
• Kinematic Viscosity of Air
• Prandtl Number Air

The viscosity of air depends mostly on the temperature. At 15 °C, the viscosity of air is 1.81 × 10-5 kg/(m·s) , 18.1 μPa·s or 1.81 × 10-5 Pa·s .

The kinematic viscosity of air at 15 °C is 1.48 × 10-5 m2 /s or 14.8 cSt. At 25 °C, the viscosity is 18.6 μPa·s and the kinematic viscosity 15.7 cSt.

Properties of air at 1 atm pressure

 Temp T, °C Density Air ρ, kg/m3 Specific Heat of Air cρ, J/kg-K Thermal Conductivity Air k, W/m-K Thermal Diffusivity Air α, m2/s Dynamic Viscosity Air µ, kg/m-s Kinematic Viscosity Air v, m2/s Prandtl Number Air Pr - 150 2.866 983 0.01171 4.158 x 10-6 8.636x 10-6 3.013 x 10-6 0.7246 - 100 2.038 966 0.01582 8.036x 10-6 1.189 x 10-5 5.837 x 10-6 0.7263 - 50 1.582 999 0.01979 1.252 x 10-5 1.474 x 10-5 9.319 x 10-6 0.7440 - 40 1.514 1002 0.02057 1.356 x 10-5 1.527 x 10-5 1.008 x 10-5 0.7436 - 30 1.451 1004 0.02134 1.465 x 10-5 1.579 x 10-5 1.087 x 10-5 0.7425 - 20 1.394 1005 0.02211 1.578 x 10-5 1.630 x 10-5 1.169 x 10-5 0.7408 - 10 1.341 1006 0.02288 1.696 x 10-5 1.680 x 10-5 1.252 x 10-5 0.7387 0 1.292 1006 0.02364 1.818 x 10-5 1.729 x 10-5 1.338 x 10-5 0.7362 5 1.269 1006 0.02401 1.880 x 10-5 1.754 x 10-5 1.382 x 10-5 0.7350 10 1.246 1006 0.02439 1.944 x 10-5 1.778 x 10-5 1.426 x 10-5 0.7336 15 1.225 1007 0.02476 2.009 x 10-5 1.802 x 10-5 1.470 x 10-5 0.7323 20 1.204 1007 0.02514 2.074 x 10-5 1.825 x 10-5 1.516 x 10-5 0.7309 25 1.184 1007 0.02551 2.141 x 10-5 1.849 x 10-5 1.562 x 10-5 0.7296 30 1.164 1007 0.02588 2.208 x 10-5 1.872 x 10-5 1.608 x 10-5 0.7282 35 1.145 1007 0.02625 2.277 x 10-5 1.895 x 10-5 1.655 x 10-5 0.7268 40 1.127 1007 0.02662 2.346 x 10-5 1.918 x 10-5 1.702 x 10-5 0.7255 45 1.109 1007 0.02699 2.416 x 10-5 1.941 x 10-5 1.750 x 10-5 0.7241 50 1.092 1007 0.02735 2.487 x 10-5 1.963 x 10-5 1.798 x 10-5 0.7228 60 1.059 1007 0.02808 2.632 x 10-5 2.008 x 10-5 1.896 x 10-5 0.7202 70 1.028 1007 0.02881 2.780 x 10-5 2.052 x 10-5 1.995 x 10-5 0.7177 80 0.9994 1008 0.02953 2.931 x 10-5 2.096 x 10-5 2.097 x 10-5 0.7154 90 0.9718 1008 0.03024 3.086 x 10-5 2.139 x 10-5 2.201 x 10-5 0.7132 100 0.9458 1009 0.03095 3.243 x 10-5 2.181 x 10-5 2.306 x 10-5 0.7111 120 0.8977 1011 0.03235 3.565 x 10-5 2.264 x 10-5 2.522 x 10-5 0.7073 140 0.8542 1013 0.03374 3.898 x 10-5 2.345 x 10-5 2.745 x 10-5 0.7041 160 0.8148 1016 0.03511 4.241 x 10-5 2.420 x 10-5 2.975 x 10-5 0.7014 180 0.7788 1019 0.03646 4.593 x 10-5 2.504 x 10-5 3.212 x 10-5 0.6992 200 0.7459 1023 0.03779 4.954 x 10-5 2.577 x 10-5 3.455 x 10-5 0.6974 250 0.6746 1033 0.04104 5.890 x 10-5 2.760 x 10-5 4.091 x 10-5 0.6946 300 0.6158 1044 0.04418 6.871 x 10-5 2.934 x 10-5 4.765 x 10-5 0.6935 350 0.5664 1056 0.04721 7.892 x 10-5 3.101 x 10-5 5.475 x 10-5 0.6937 400 0.5243 1069 0.05015 8.951 x 10-5 3.261 x 10-5 6.219 x 10-5 0.6948 450 0.4880 1081 0.05298 1.004 x 10-4 3.415 x 10-5 6.997 x 10-5 0.6965 500 0.4565 1093 0.05572 1.117 x 10-4 3.563 x 10-5 7.806 x 10-5 0.6986 600 0.4042 1115 0.06093 1.352 x 10-4 3.846 x 10-5 9.515 x 10-5 0.7037 700 0.3627 1135 0.06581 1.598 x 10-4 4.111 x 10-5 1.133 x 10-4 0.7092 800 0.3289 1153 0.07037 1.855 x 10-4 4.362 x 10-5 1.326 x 10-4 0.7149 900 0.3008 1169 0.07465 2.122 x 10-4 4.600 x 10-5 1.529 x 10-4 0.7206 1000 0.2772 1184 0.07868 2.398 x 10-4 4.826 x 10-5 1.741 x 10-4 0.7260 1500 0.1990 1234 0.09599 3.908 x 10-4 5.817 x 10-5 2.922 x 10-4 0.7478 2000 0.1553 1264 0.11113 5.664 x 10-4 6.630 x 10-5 4.270 x 10-4 0.7539