Can You See Thermal Columns Rise From Asphalt in May?
🕐 7 min read | 🌍 Natural Wonders 🔒 Key Takeaways Asphalt can reach surface temperatures of 60–70°C (140–158°F) on a sunny May day, nearly double the air temperature above it. Thermal columns, or thermals, rise at speeds of 1–3 meters per second above superheated asphalt surfaces. The shimmering distortion you see on hot roads is caused by light refracting through air layers with temperature differences of up to 40°C within just centimeters. May is statistically one of the peak months for road-surface thermal activity across South Asia and the Indian subcontinent, with solar angles near their annual maximum. On a blazing May afternoon, the road ahead seems to ripple and melt like a living thing — but are you actually seeing thermal columns rising from asphalt with the naked eye, or is your brain playing tricks? The answer involves bending light, convecting air, and physics so spectacular it turns every highway into an outdoor laboratory. Understanding thermal c...