Jul 18, 2025 · Air, mixture of gases comprising the Earth’s atmosphere. The mixture contains a group of gases of nearly constant concentrations and a group with concentrations that are variable in both space and time. Our air quality forecast chart breaks down the quality of the air on an hour-by-hour scale, allowing you to visualize the trends in air quality and plan your outdoor activities. Air is a mixture of many gases and tiny dust particles. It is the clear gas in which living things live and breathe. It has an indefinite shape and volume. It has mass and weight, because it is matter. The weight of air creates atmospheric pressure. There is no air in outer space. Oct 1, 2024 · Air is the invisible mixture of gases that surrounds Earth. Air contains important substances, such as oxygen and nitrogen, that most species need to survive. 2 days ago · Pollution levels have improved significantly over the decades as a result of state, regional and national air pollution reduction efforts. The graphs available below illustrate more recent trends in pollutant concentrations. The meaning of AIR is the mixture of invisible odorless tasteless gases (such as nitrogen and oxygen) that surrounds the earth; also : the equivalent mix of gases on another celestial object (such as a planet). AIR meaning: 1. the mixture of gases that surrounds the earth and that we breathe: 2. the space above the…. Learn more. Elizabeth Air Quality Index (AQI) is now Good. Get real-time, historical and forecast PM2.5 and weather data. Read the air pollution in Elizabeth, USA w Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution. Jul 22, 2025 · The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.