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Air Quality

Thought Leadership

September 3, 2024

‘Letter to Air’ by Mayor of Portland, Ted Wheeler

Hear from the Mayor of Portland, Ted Wheeler, ahead of the International Day of Clean Air for blue skies on...
Press Release

July 25, 2024

C40 Cities mayors launch global air quality marathon as new poll reveals widespread support

Mayors from C40 cities gather in Paris to launch 'It's In The Air' – a global C40 campaign highlighting people-focused…
In Focus

June 28, 2024

What happened at London Climate Action Week?

Catch up on C40's highlights from the 2024 London Climate Action Week
Press Release

January 19, 2024

Guadalajara announces Mexico’s first low-emission zone, joining the global movement for cleaner air

Guadalajara has announced its plans for Mexico's first low-emission zone (LEZ), joining the global movement for clean air and safer…
In Focus

December 4, 2023

COP28 catch-up #1: What have city leaders been up to?

Check out our highlights from 30 November – 4 December at COP28
Press Release

December 2, 2023

Breathe Cities unveils new cohort of cities to join ambitious initiative to fight toxic air pollution

Announced at COP28, the new Breathe Cities cohort includes Accra, Brussels, Jakarta, Johannesburg, Milan, Nairobi, Paris, Rio de Janeiro and…

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