Atmospheric Pressure: Ireland vs. Mexico

Correction

The premise is incorrect: atmospheric pressure in Ireland is not greater than in Mexico.

Typical Values

• Mexico City (high altitude ~2,240 m): Average ~760 hPa (mm Hg) — *Note: actual average is lower due to altitude; sea-level pressure is ~1013 hPa. Mexico City's station pressure is ~760 hPa.*
• Dublin (near sea level): Average ~1013 hPa (mm Hg).

Why the Confusion?

Pressure decreases with altitude. Mexico City's high elevation means lower absolute pressure. Ireland's low elevation means higher pressure (closer to standard sea-level pressure).

Key Point

Comparing pressures at different elevations requires adjustment to sea level. At their actual elevations, Dublin has higher pressure than Mexico City.