noun
haze
HAYZ/heɪz/
A thin cloudiness that reduces clear visibility.
A thin haze hangs over the city and softens the distant skyline.

Etymology
Haze probably arose from the earlier nautical adjective hazy, whose origin is unknown. The noun named atmospheric opacity—the obscuring effect of particles or moisture in the air.
In context
a wall of heat and smoke visibility was almost non-existent but his flashlight cut through the haze
More examples
- We can barely see the mountains through the summer haze.
- Dust from the fields leaves a brown haze in the air.
- The afternoon breeze clears the haze from the valley.
Forms
haze · hazes
hazy adjective — Slightly cloudy, making distant objects unclear.