What is a good pollution index?
Think of the AQI as a yardstick that runs from 0 to 500. The higher the AQI value, the greater the level of air pollution and the greater the health concern. For example, an AQI value of 50 or below represents good air quality, while an AQI value over 300 represents hazardous air quality.
How do you calculate pollution index?
How is AQI calculated?
- How is AQI calculated?
- The Sub-indices for individual pollutants at a monitoring location are calculated using its.
- 24-hourly average concentration value (8-hourly in case of CO and O3) and health breakpoint concentration range.
- All the eight pollutants may not be monitored at all the locations.
What is the pollution level in Malaysia?
In 2019 Malaysia came in ranked 50th place amongst all the countries of the world, with a PM2. 5 rating of 19.36 µg/m³, putting its yearly average into the ‘moderately’ polluted range.
What does AQI 154 mean?
At 101 to 150, the air is considered unhealthy for sensitive groups: The elderly, children, and people with lung disease are vulnerable to the effects of ozone pollution; and the elderly, children and those with heart and lung disease are at risk from particulate matter.
What does AQI 10 mean?
When the amount of air pollution is very high, the number will be reported as 10+. A category that describes the level of health risk associated with the index reading (e.g. Low, Moderate, High, or Very High Health Risk).
What is the best air quality index number?
The six levels of health concern and what they mean are:
- “Good” AQI is 0 – 50.
- “Moderate” AQI is 51 – 100.
- “Unhealthy for Sensitive Groups” AQI is 101 – 150.
- “Unhealthy” AQI is 151 – 200.
- “Very Unhealthy” AQI is 201 – 300.
- “Hazardous” AQI greater than 300.
What is air quality index measure?
Air quality is measured with the Air Quality Index, or AQI. The AQI works like a thermometer that runs from 0 to 500 degrees. However, instead of showing changes in the temperature, the AQI is a way of showing changes in the amount of pollution in the air.
Is 500 Air quality bad?
“An AQI of 500 is exceptionally high. The higher the AQI value, the greater the level of air pollution and the greater the health concern. “The kind of air quality you are breathing depends on the concentrations of pollutants such as PM 2.5 or PM 10.