How to Identify and Resolve Common Issues ?
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According to the EPA, however, the levels of indoor air pollutants are often 2 to 5 times higher than outdoor levels, and in some cases these levels can exceed 100 times that of outdoor levels of the same pollutants. In other words, sometimes the air inside can be more harmful than the air outside.
For wildfire smoke, use the AQI for PM2. 5, which is measurement of fine particles in the air. An AQI over 150 is considered unhealthy for the general population. AQI over 101 can be unhealthy for sensitive groups and some workers with asthma and other conditions may feel unhealthy when the AQI is below 150.
Most indoor air pollution comes from sources that release gases or particles into the air. Things such as building materials and air fresheners give off pollution constantly. Other sources such as tobacco smoke and wood-burning stoves also cause indoor pollution. Some indoor air pollutants have been around for years.
Because there is not enough ventilation, concentrations of indoor air pollutants can build up from inside sources as they are not released into the greater outdoor expanse. The design of modern homes to reduce air leakage (with improved insulation) may also lead to lower air exchange between the indoors and outdoors.
Fresh air generally has higher levels of oxygen (not to mention lower levels of pollution) than indoor air. Exposure to more oxygen causes the blood vessels in your lungs to dilate, which improves cleansing and tissue repair within them, and helps them exchange gases more easily.
Breathing in fresh air can help to reduce airborne illness and infection. This is because bacteria and viruses have a reduced chance of survival in fresh air. This is in comparison to warm, humid, indoor environments in which they thrive.
Importance of Indoor Air Quality
Americans, on average, spend approximately 90 percent of their time indoors,1 where the concentrations of some pollutants are often 2 to 5 times higher than typical outdoor concentrations.
The common sources of outdoor air pollution are emissions caused by combustion processes from motor vehicles, solid fuel burning and industry. Other pollution sources include smoke from bushfires, windblown dust, and biogenic emissions from vegetation (pollen and mould spores).
Both short- and long-term exposure to indoor air pollution can cause a range of health issues, including respiratory diseases, heart disease, cognitive deficits, and cancer.
Air pollution can affect lung development and is implicated in the development of emphysema, asthma, and other respiratory diseases, such as chronic obstructive pulmonary disease (COPD). Increases in asthma prevalence and severity are linked to urbanization and outdoor air pollution.
Common Outdoor Air Pollutants
It is also one of the most dangerous—and it`s invisible. Particulate matter, or particle pollution, refers to a mix of very tiny solid and liquid particles that are in the air we breathe. It is dangerous enough to shorten your life.
This is because, as the temperature drops during the nighttime hours, the atmosphere traps car emissions, CO2, and other pollutants in the house and down near the ground – and the effect is much worse if spaces inside the home are poorly ventilated.
This is why during the day, when there are a lot of cars out at rush hour air pollution levels might be lower. During the night Planetary Boundary Layer becomes shallow and there is less space for these pollution particles to move around, causing them to get concentrated.
When temperatures chill, layers of the atmosphere are more likely to mix. This reduces pollution, making the air cleaner and easier to breathe. That`s why breathing cold air feels healthier for many people.
Fresh air not only cleans your lungs, it can also boost your mood, lower your heart rate, increase energy levels and even improve digestion (yes, that`s right).
Australia topped the list as the least polluted country in the world, with 7 cities in the top 25. Of the 25 least polluted cities in the world with the best air quality, Nordic countries (Finland, Sweden, Norway, Iceland, Estonia) dominated the rankings with some of the cleanest air in the world in 2022.
Colder Air is Good for Your Brain
Colder air boosts your brain activity, improves focus, and helps you think more clearly. Numerous studies show that our cognitive functions improve in colder weather: we`re prone to quicker decision-making and staying calm when our body needs more energy to keep us warm.
The major contributors to the air pollution in Dubai are vehicular emissions, industrial activities, construction sites, and dust storms. The high levels of pollution can have adverse effects on the health of the residents and tourists, causing respiratory problems, heart disease, and other health issues.
Indoor pollution sources that release gases or particles into the air are the primary cause of indoor air quality problems. Inadequate ventilation can increase indoor pollutant levels by not bringing in enough outdoor air to dilute emissions from indoor sources and by not carrying indoor air pollutants out of the area.
Most particulate pollution comes from outside. And in closed rooms, particles will slowly fall to the ground. Thus, indoor air should be better when the windows are doors are closed. In places where the doors and windows were closed, the air was always better than outside.
This is a process called “coagulation.” When the rain travels from the atmosphere to the ground, it takes all of these suspended particles down with it, essentially cleansing the air.
Breathing clean air can lessen the possibility of disease from stroke, heart disease, lung cancer as well as chronic and acute respiratory illnesses such as asthma. Lower levels of air pollution are better for heart and respiratory health both long- and short-term.
How dirty is the air in your home? Indoor air quality can be two to five times more polluted than outdoor air, and since the Environmental Protection Agency estimates that people spend 90% of their time indoors, this is a big deal.
WHAT HEALTH EFFECTS CAN BE CAUSED BY POOR INDOOR AIR QUALITY? Occupants of homes with poor indoor air quality may complain of symptoms such as headache, eye irritation, fatigue, dry throat, sinus congestion, dizziness, and nausea.