Ozone levels

What is the acceptable level of ozone? What can you do to reduce ozone levels? Ground-level Ozone Pollution. Stratospheric ozone is “good” because it protects living things from ultraviolet radiation from the sun.

When ground-level ozone levels are high, take steps to limit the amount of air you breathe in while you’re outside. For example: Think about spending more time indoors, where ozone levels are usually lower. Called stratospheric ozone , good ozone occurs naturally in the upper atmosphere, where it forms a protective layer that shields us from the sun's harmful ultraviolet rays. Ozone can be good or ba depending on where it is found.

Ozone in the stratosphere is good because it shields the earth from the sun’s ultraviolet rays. Ozone at ground level, where we breathe, is bad because it can harm human health. Ozone forms when two types of pollutants (VOCs and NOx) react in sunlight. Ozone is a powerful oxidant that can irritate the airways.

Even relatively low levels of ozone can cause health effects. Location and production. The highest levels of ozone in the atmosphere are in the stratosphere, in a region also known as the ozone layer between about km and km above the surface (or between about and miles ). However, even in this layer, the ozone concentrations are only two to eight parts per million,.

At ground level , ozone is a harmful pollutant. Ozone pollution is a concern during the summer months because strong sunlight and hot weather result in harmful ozone concentrations in the air we breathe. Many urban and suburban areas throughout the United States have high levels of bad ozone. The NIOSH recommended exposure limit for ozone is 0. Ozone in the air we breathe can harm our health, especially on hot sunny days when ozone can reach unhealthy levels. According to NIOSH, Ozone levels of ppm or higher are considered immediately dangerous to life or health.

Ozone (O₃) is a colorless to blue gas with a pungent odor. Exposure to ozone may cause headaches, coughing, dry throat, shortness of breath, a heavy feeling in chest, and fluid in the lungs. Higher levels of exposure can lead to more severe symptoms. Chronic exposure may lead to asthma. A French study found that exposure to elevated ozone levels for one to two days increased the risk of heart attacks for middle-aged adults without heart disease.

Several studies around the world have found increased risk of hospital admissions or emergency department visits for cardiovascular disease. Current Ozone 1-Hour Levels The map below shows the current highest ozone 1-hour levels measured in parts per billion (ppb) for each of the metropolitan or other areas across Texas where ozone is measured by the TCEQ. Our ozone sensors and monitoring systems are used in a wide range of ozone monitoring and control applications.

Gas sensitive semiconductor technology allows ppb level detection with high accuracy and stability at a fraction of the cost of analyzer based instruments. An Action Day for fine particulates, carbon monoxide or ozone indicates that either current air quality is unhealthy or conditions are expected to worsen later in the day or on the next day. Action Days for air pollutants generally indicate that air quality will be in either the Unhealthy or Unhealthy-for-Sensitive-Groups categories according.

AQI: Unhealthy for Sensitive Groups (1- 150) Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone , whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air.