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May 29, 2026 Air Quality Blog

Vertical cross section, stretching from the southern US through the mid-Atlantic on Friday at 2:00 AM EDT. The 2 PVU dashed line, which represents the height of the tropopause, can be seen plunging southward towards the NC/TN mountains.

Rapid Reaction: The Stratosphere Makes a Surprise Visit?

By Jordan Root An interesting air quality event may have happened during the morning hours of Friday, May 15. Two high elevation (ridge top) ozone monitors, one in...