Why the Sun Appears Red
The Sun can look red or orange when it is low on the horizon. At that angle, sunlight travels through more of Earth's atmosphere. Shorter blue wavelengths scatter away, leaving longer red wavelengths to reach your eyes.
What Conditions Make the Sun Look Red Today
Red Sun appearances are often linked to dust, wildfire smoke, or high humidity in the air. These particles increase scattering and can tint the Sun red even when it is higher in the sky. Local weather reports and satellite images can show nearby smoke or dust plumes.
Is a Red Sun Dangerous
A red Sun is usually not a direct health risk, but heavy smoke or dust can reduce air quality. People with respiratory issues should check local air quality indexes and limit prolonged outdoor activity if needed. You can monitor official air quality data through government environmental websites.
