Yes, humidity contributes to haziness.
Haze is an atmospheric phenomenon characterized by reduced visibility due to the presence of tiny particles in the air. While these particles can be dust, smoke, pollutants, and other aerosols, water vapor, enhanced by high humidity, plays a significant role. Here's a breakdown:
- Hygroscopic Particles: Many particles in the air, like salt, sulfates, and nitrates, are hygroscopic. This means they readily absorb water from the surrounding air when humidity is high.
- Increased Particle Size: As these particles absorb water, they grow in size. Larger particles are more effective at scattering light, which reduces visibility and creates a hazy appearance.
- Light Scattering: The scattering of light by these larger, moisture-laden particles is what gives haze its characteristic milky or opaque appearance. This scattering affects our ability to see distant objects clearly.
- Synergy with Temperature: The effect of humidity on haze is often amplified by temperature. Warmer air can hold more moisture, exacerbating the water absorption by particles.
In summary, while not the only cause, humidity significantly contributes to haziness by increasing the size of airborne particles through water absorption, leading to increased light scattering and reduced visibility.
