We know that when air quality is poor it is unhealthy, especially for people who are sensitive to it such as children, older adults, or people with heart disease, asthma, and other respiratory ailments.
But air quality isn’t the same everywhere. Pollution can build up in isolated pockets, and local sources for example near industry or a busy road can add to the overall poor air quality. Also the weather conditions in an area play a part in the quality of the air.
Because different areas have different levels of air quality at different times it is important for us to monitor what is happening. That way we can identify trouble spots and ensure that we are taking the right steps to ensure we all enjoy the cleanest air possible.