Today's barometric pressure in Henderson, a 48-hour pressure chart, and a risk score for weather-triggered migraine and headache, based on pressure drops, humidity, and temperature changes.
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Henderson sits at 569 metres in the southeastern corner of the Las Vegas valley, closer to Lake Mead than the Strip. Pressure averages 948 hPa, and the surrounding ranges hold the valley's air in place until a system is strong enough to move it.
Worst season for migraines: January and March, with February close behind. Systems strong enough to clear both the Sierra and the Spring Mountains bring the main cool-season changes. Monsoon moisture in late summer adds isolated but intense convective events over the valley.
Common triggers in Henderson: basin stagnation with accumulating particulates, monsoon convection over the valley, single-digit humidity through the warm months. Ringed by mountains on every side, the Las Vegas valley is a closed basin where air stagnates readily and pollutants accumulate during calm periods. Henderson's position on the eastern side means it catches downslope flow off the McCullough Range. Between these effects and humidity that often stays in single digits, dehydration and air quality both act alongside barometric change.
Typical pressure: Henderson averages 948 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 938 hPa. Swings of 5-9 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
2026 index: Henderson is not one of the 100 metros ranked in our 2026 U.S. Migraine Risk Index, which shows how they compare.
Can Henderson weather trigger migraines?
Yes. Henderson experiences 5-9 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include basin stagnation with accumulating particulates, monsoon convection over the valley, single-digit humidity through the warm months.
What time of year are migraines worst in Henderson?
In Henderson the most barometrically volatile stretch of the year falls in January and March, with February close behind. That is when weather is most likely to play a part, if weather is a trigger for you at all. See when migraine weather season starts across the U.S.
Is there a barometric pressure headache forecast for Henderson?
This page works as one. Many people call a headache that arrives with a weather change a barometric pressure headache, and this forecast tracks the pressure drops, humidity and temperature swings behind that idea. The score covers the next 24 hours in Henderson and the chart shows the next 48. It is built on migraine research, so treat it as a rough guide for other headaches. A sudden, severe headache needs urgent medical care, whatever the weather.
Your own forecast
This page shows the weather risk for everyone in Henderson. The MigrAid app learns yours. It saves the barometric pressure, humidity and temperature with every migraine you log, shows whether Henderson's swings really line up with your attacks, and alerts you when conditions match your own trigger history.