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Air signs of the zodiac

Gemini, Libra and Aquarius are the air signs of the zodiac. Air is the element of thought, communication, social connection and ideas.

The three air signs

What air means in astrology

Air is the element of the mind and of relationships. Astrologers associate it with communication, curiosity, objectivity and social connection. The shadow side is detachment, overthinking and restlessness. Aquarius belongs to air even though its symbol is the water-bearer: the water it pours is read as knowledge shared with others.

Libra starts connections (cardinal air), Aquarius holds principles (fixed air) and Gemini gathers and passes on information (mutable air).

The air signs compared

SignDatesModalityRulerKeywords
GeminiMay 21 to June 20MutableMercurycuriosity, versatility, wit
LibraSeptember 23 to October 22CardinalVenusbalance, fairness, partnership
AquariusJanuary 20 to February 18FixedSaturn (modern: Uranus)independence, originality, community

Air sign compatibility

Air is traditionally compatible with fire, which it feeds, and with other air signs.

Traditional pairings: Gemini, Libra, Aquarius are said to understand each other’s basic temperament. Compare any two signs.

Air signs zodiac months

Air signs cover parts of January, February, May, June, September, October. Gemini runs from May 21 to June 20. Libra runs from September 23 to October 22. Aquarius runs from January 20 to February 18.

Air sign questions

What are the air signs?

The air signs are Gemini (May 21 to June 20), Libra (September 23 to October 22) and Aquarius (January 20 to February 18).

Which months are air signs?

Air sign birthdays fall in parts of January, February, May, June, September, October.

What are air signs like?

Astrologers associate it with communication, curiosity, objectivity and social connection.

Which elements are compatible with air?

Air is traditionally compatible with fire, which it feeds, and with other air signs.

Explore another element

Updated · How we write and check this guide