The theme of International Day of ‘Clean Air for Blue Skies-2022’ is ___.

Concept: The International Day of Clean Air for Blue Skies is observed every year on 7 September under the United Nations. Each annual observance is anchored to a single official theme set by UNEP, which frames that year's global message on air quality. Identifying the correct answer means recalling the specific theme assigned to the stated year, not a generic clean-air slogan.

Application: For 2022 (the third observance), UNEP set the official theme as “The Air We Share.” The phrase deliberately stresses the transboundary nature of air pollution — air crosses national borders, so clean air is a shared resource requiring collective, cross-border accountability and action. UNEP's 2022 campaign and guide were promoted under the hashtag #TheAirWeShare.

Contrast with the other phrasings:

• “Air For The World” — a plausible-sounding slogan, but it was never the designated UN theme for this day in 2022.

• “Healthy Air Healthy Planet” — echoes general environmental-health messaging, yet it is not the official 2022 theme.

• “Clean Air For All” — reflects the broad mission of the day, but it is not the specific theme assigned to 2022.

Result: The official 2022 theme is “The Air We Share.”