Aden vs Sanaa
Sanaa leads Aden by 6 points on the CIRA Index, 33 to 27. Aden grades better on 3 measures, Sanaa on 5; the same 35 measures from public sources for both.
Scores by each organisation's criteria
- CIRA Index: Aden 27, Sanaa 33
- OECD: Aden 25, Sanaa 42
- UN Tourism: Aden 31, Sanaa 31
- UNDRR: Aden 12, Sanaa 38
Theme by theme
- Demand and seasonality: Aden –, Sanaa –
- Economy and jobs: Aden 13, Sanaa 13
- Climate and hazards: Aden 25, Sanaa 65
- Water and environment: Aden 44, Sanaa 44
- Community and housing: Aden –, Sanaa –
- Access and continuity: Aden 8, Sanaa 17
Where Aden is stronger
- Wildfire and storm hazard: very low (region figure) (World Bank GFDRR ThinkHazard, current (retrieved 2026)). Grade 4/4.
- Water scarcity: medium (region figure) (World Bank GFDRR ThinkHazard, current (retrieved 2026)). Grade 2/4.
- Access redundancy: 2 independent ways in: international airport, intercity rail, port, motorway (Port of Aden & FlightConnections / Aden International Airport Overview, 2025–2026). Between 2 and 3: grade 2/4.
Where Sanaa is stronger
- Extreme heat days: 0 days a year at or above 35°C (last 5 full years) (ERA5 reanalysis via Open-Meteo, 2021–2025). At or below 5: grade 4/4.
- Tropical nights: 0.6 nights a year with a minimum at or above 20°C (last 5 full years) (ERA5 reanalysis via Open-Meteo, 2021–2025). At or below 10: grade 4/4.
- Flood hazard: very low (region figure) (World Bank GFDRR ThinkHazard, current (retrieved 2026)). Grade 4/4.
- Green space: 12.2 % of the urban area that is green or tree-covered (Academia / Study on Green Spaces in Sana'a Old City - Yemen between Past to Present, 2023). Between 10 and 20: grade 1/4.
- Early warning and emergency plan: An updated city plan with public early warning for heat, flood or fire (IMPACT Consulting & Telegrafia System Documentation, 2022–2024). Grade 3/4.
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