Barometric Pressure Forecast for Delhi, India
Barometric pressure forecast for Delhi, India — on the Indo-Gangetic plain beside the Yamuna River and the low Aravalli ridge, where the summer monsoon and dense winter fog drive the year's biggest pressure swings. See current barometric pressure through monsoon onset, pre-monsoon dust storms and winter cold, foggy inversions.
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Pressure and weather in Delhi
Delhi spreads across the flat Indo-Gangetic plain on the west bank of the Yamuna River, with the ancient, low Aravalli ridge running through its southern reaches, the last worn-down extension of a range that otherwise lies far to the southwest. The city's weather is dominated by two very different seasonal engines. Through May and early June, intense surface heating builds a strong thermal low over northwest India, and pre-monsoon dust storms and thunderstorms, locally called andhi, can bring sudden, sharp pressure drops within the hour as gusty outflow winds arrive ahead of visible dust walls. Then, typically around late June, the southwest monsoon arrives, and its onset itself is marked by a pronounced pressure fall as moist Bay of Bengal and Arabian Sea air floods the plain, followed by a wetter but comparatively more stable pattern through August into September as monsoon depressions pass through. Winter brings the opposite extreme: cold, calm high-pressure conditions trap pollution and moisture near the surface, producing the dense fog Delhi is known for, broken only when western disturbances moving off the Mediterranean and Caspian bring occasional rain and a real, if modest, pressure dip.
What this means for you
Delhi's pressure swings hardest during the pre-monsoon dust-storm season in May and June and again at monsoon onset in late June, with a quieter but still notable pattern of small dips through winter's foggy, western-disturbance season. A barometric pressure forecast is especially useful around those transition points, and a migraine tracker app can help you tell whether the abrupt drop before a dust storm or the more gradual shift at monsoon onset lines up with your weather migraine episodes.