VALICALC · TECHNICAL REFERENCE

Dry Air Properties Table

Look up generated dry-air density and viscosity at selected temperatures and 1 atm. Transfer a reviewed point to Duct Size without silently interpolating.

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Search within the verified subset. Numeric sizes match complete designations; a nearby size is a candidate, not an exact match.

SELECTED REFERENCE

-10 °C dry air

Density
1.342391 kg/m³
Kinematic viscosity
12.450697 cSt
Dry-bulb temperature
-10 °C
All fields & cell provenance
Dynamic viscosity
16.713704 µPa·s
Specific heat cp
1,005.572 J/(kg·K)

v1.3.0 · verified 2026-10-07

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Use dry-air density and viscosity →

-10 °C dry air1.342391 kg/m³Back to answer ↑

Explore the verified data

9 matching rows · 9 in this subset

Dry Air Properties Table, metric display
Dry-air model pointDensityKinematic viscosityDry-bulb temperatureActions
-10 °C dry air1.342391 kg/m³12.450697 cSt-10 °C
0 °C dry air1.293066 kg/m³13.315957 cSt0 °C
10 °C dry air1.247248 kg/m³14.203782 cSt10 °C
15 °C dry air1.225539 kg/m³14.656031 cSt15 °C
20 °C dry air1.204575 kg/m³15.113772 cSt20 °C
25 °C dry air1.184318 kg/m³15.57696 cSt25 °C
30 °C dry air1.164734 kg/m³16.045549 cSt30 °C
40 °C dry air1.12745 kg/m³16.998749 cSt40 °C
50 °C dry air1.092484 kg/m³17.973028 cSt50 °C

-10 °C dry air

Density
1.342391 kg/m³
Kinematic viscosity
12.450697 cSt
Dry-bulb temperature
-10 °C
More dimensions
Dynamic viscosity
16.713704 µPa·s
Specific heat cp
1,005.572 J/(kg·K)

0 °C dry air

Density
1.293066 kg/m³
Kinematic viscosity
13.315957 cSt
Dry-bulb temperature
0 °C
More dimensions
Dynamic viscosity
17.218406 µPa·s
Specific heat cp
1,005.684 J/(kg·K)

10 °C dry air

Density
1.247248 kg/m³
Kinematic viscosity
14.203782 cSt
Dry-bulb temperature
10 °C
More dimensions
Dynamic viscosity
17.715636 µPa·s
Specific heat cp
1,005.875 J/(kg·K)

15 °C dry air

Density
1.225539 kg/m³
Kinematic viscosity
14.656031 cSt
Dry-bulb temperature
15 °C
More dimensions
Dynamic viscosity
17.961537 µPa·s
Specific heat cp
1,006 J/(kg·K)

20 °C dry air

Density
1.204575 kg/m³
Kinematic viscosity
15.113772 cSt
Dry-bulb temperature
20 °C
More dimensions
Dynamic viscosity
18.205675 µPa·s
Specific heat cp
1,006.144 J/(kg·K)

25 °C dry air

Density
1.184318 kg/m³
Kinematic viscosity
15.57696 cSt
Dry-bulb temperature
25 °C
More dimensions
Dynamic viscosity
18.448082 µPa·s
Specific heat cp
1,006.308 J/(kg·K)

30 °C dry air

Density
1.164734 kg/m³
Kinematic viscosity
16.045549 cSt
Dry-bulb temperature
30 °C
More dimensions
Dynamic viscosity
18.68879 µPa·s
Specific heat cp
1,006.492 J/(kg·K)

40 °C dry air

Density
1.12745 kg/m³
Kinematic viscosity
16.998749 cSt
Dry-bulb temperature
40 °C
More dimensions
Dynamic viscosity
19.165234 µPa·s
Specific heat cp
1,006.921 J/(kg·K)

50 °C dry air

Density
1.092484 kg/m³
Kinematic viscosity
17.973028 cSt
Dry-bulb temperature
50 °C
More dimensions
Dynamic viscosity
19.635248 µPa·s
Specific heat cp
1,007.431 J/(kg·K)

How to use this data

Pinned offline PropsSI density and dynamic viscosity; ν=μ/ρ×10^6 cSt. Store unrounded generated outputs and convert display units without changing the point.

    CHECK THE METHOD

    Worked example

    At 20 °C and 101325 Pa, dry-air density is about 1.2046 kg/m³ and ν about 15.1 cSt. Select the actual generated point before review/apply.

    Common lookup questions

    What should I confirm before using this lookup?

    Dry-air model only; humid or pressurized air changes density. Choose measured/appropriate design properties where available. Viscosity units cSt are mm²/s.

    TRACEABLE DATA

    Sources, scope & verification

    Dataset v1.3.0
    Last verified:

    Nine generated dry-air points from −10 to 50 °C at 101325 Pa. Pinned model revision is recorded in full provenance. No interpolation or altitude correction.

    Values are curated product facts or generated scenarios. Paid standards, complete catalogs and source diagrams are not reproduced. A verification date applies to this documented subset.

    Generated dry/humid air thermophysical points ↗

    Type C · CoolProp contributors · CoolProp 7.1.0; pinned JSON, not current online model version

    Our selected generated model outputs. MIT attribution preserved in third-party-licenses/CoolProp-MIT.txt.

    Full provenance & artifact record
    Source checked
    2026-10-07
    Use basis
    open-license
    License
    MIT
    Model revision
    2a1c5d7231011ed1c20067b8528150398d12c841
    Artifact SHA-256
    No retained source artifact hash; see the stated source and verification record.

    VALICALC · PRIVACY