Overview

• Local reports place the seasonal high point in mid‑October, with concentrations tapering from late November into early December.
• The floating yellow “fluff” consists of wind‑dispersed seeds that cause mechanical irritation, whereas the pollen provokes true allergic reactions.
• Symptoms such as rhinitis, tearing, congestion, itching and occasional bronchospasm are most troublesome for sensitized residents.
• Dry, windy weather keeps particles aloft and worsens exposure, while rainfall briefly clears the air by washing them to the ground.
• Authorities estimate roughly 70,000 plane trees—about 15% of the urban canopy—so doctors recommend timing outings away from early morning and dusk, wearing sunglasses and light masks, ventilating briefly, cleaning with damp cloths, using saline rinses and seeking care if symptoms persist.