Density of air
Dry air
Table:
Effect of temperature on properties of air

Celsius
tempe­rature
θ [°C]

Speed of
sound
c [m/s]

Density
of air
ρ [kg/m3]

Characteristic specific
acoustic impedance
z0 [Pa⋅s/m]

35
351.88
1.1455
403.2

30
349.02
1.1644
406.5

25
346.13
1.1839
409.4

20
343.21
1.2041
413.3

15
340.27
1.2250
416.9

10
337.31
1.2466
420.5

5
334.32
1.2690
424.3

0
331.30
1.2922
428.0

−5
328.25
1.3163
432.1

−10
325.18
1.3413
436.1

−15
322.07
1.3673
440.3

−20
318.94
1.3943
444.6

−25
315.77
1.4224
449.1

Considering the table titled Density of air, section Dry air, write a short sentence answering the following question: How's air like at 20 °C? Return your answer as JSON: {"answer": "YOUR ANSWER"}.

answer: At 20 °C, dry air has a density of 1.2041 kg/m³.