Density of Air (All Units + Temperature Table + Infographic)

Definition

The density of air is the weight of the air per its occupied volume. Also worth noting that density depends on the temperature and altitude (Pressure) and water (Humidity) content.

Formula

ρ = m / V

• ρ:  Density
• m: mass
• V: Volume

Density vs Specific Weight vs Specific Gravity

I would like to point out that there are conceptual differences between density, specific weight and specific gravity. Follow the link if you want to learn more about these differences.

With that said, this page will provide you the density of air in kg/m³ (SI unit), g/cm³, g/ml, kg/l, lb/ft³.

Density of Air

Air density at 25 °C (77 °F or room temperature) and 1 atm is:

𝛒 = 0.001184 g/cm³

𝛒 = 1.184 kg/m³

𝛒 = 0.001184 g/ml
𝛒 = 1.184 g/L

𝛒 = 0.0739147 lb/ft³

Source: mragheb

Air Density vs Temperature

Click to enlarge

The info above is mostly considered "dry air" (STP).

If you are interested in engineering content, be sure to check my other articles.

My Density Infographic

Put the air density in perspective!

How about an incentive to share this post? (You will help other colleagues find this blog)

Download and enjoy my infographic:

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