Smog, or smoke fog, is a type of intense air pollution. The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog [1] to refer to smoky fog due to …

Apr 4, 2025 · Smog, community-wide polluted air. Although the term is derived from the words smoke and fog, it is often used to describe the pall of automotive or industrial origin that lies …

Apr 4, 2025 · Air pollution emitted from transportation contributes to smog, and to poor air quality, which has negative impacts on the health and welfare of U.S. citizens. Pollutants that …

Oct 31, 2023 · Smog (sometimes referred to as ground-level ozone) occurs when emissions from combusting fossil fuels react with sunlight. Soot—a type of particulate matter—is made up of …

Oct 1, 2024 · Smog is air pollution that reduces visibility. The term "smog" was first used in the early 1900s to describe a mix of smoke and fog. The smoke usually came from burning coal. …

Smog is often caused by heavy traffic, high temperatures, sunshine, and calm winds. These are a few of the factors behind an increasing level of air pollution in the atmosphere.

Aug 24, 2021 · Smog is a visible form of air pollution that often appears as a thick haze. Look toward the horizon during daylight hours, and you can see how much smog is in the air. High …

Dec 12, 2024 · What is smog? Learn its definition, causes, and harmful effects on health and the environment. Discover how smog impacts cities and ecosystems.

May 13, 2023 · Simply put, smog is the generic term for certain types of air pollution, particularly very visible, thick air pollution associated with large cities and industrial zones.

Breathing ozone-polluted air can cause coughing and shortness of breath, damage and inflame airways, and aggravate asthma. Airborne particles, meanwhile, are easily inhalable and can …