Air pollution is a trigger for many people with asthma.
There can be many kinds of asthma triggers in the air. As well as factory smoke and exhaust fumes, things like cigarette smoke, strong perfumes or scents, aerosols, cleaning sprays and insect repellents can all trigger asthma.
Climate change and air pollution
Climate change affects weather, causing storms, floods, heatwaves, wildfires, and other extreme events. It worsens air quality and increases pollution. Extreme heat and cold can trigger asthma symptoms and infections. Higher temperatures lead to more potent and abundant pollen and increased mould and fungal spores.
Air pollution types include:
- Particulate matter: Dust, dirt, smoke from fires, roads, and manufacturing, as well as natural sources like volcanoes, pollen, and soil.
- Ozone: Formed when sunlight combines with nitrogen dioxide, particulate matter, and other gases.
- Sulphur dioxide: Mainly from burning coal and oil, causing smog.
- Nitrogen dioxide: Toxic gas found near busy roads, industrial sites, and where fossil fuels are burned.
If you think air pollution/climate change may be a trigger for your asthma
- Keep a diary to identify and avoid your triggers.
- Carry a reliever/MART inhaler if exhaust fumes affect you.
- Use AirQuality.ie to check local air quality; limit outdoor time when pollution or ozone levels are high (especially on hot, sunny afternoons).
- Get advice before using home improvement materials.
- Keep your home well ventilated, especially when using cleaning products.
- Service heating systems regularly to prevent fume leaks.
- Avoid outdoor activity in high-traffic, industrial, or coal/oil-burning areas.
- Exercise early when air quality is better.
- Use your reliever/MART inhaler as needed and follow your Asthma Action Plan.
- Keep car windows closed in traffic.
- Close external doors facing busy roads.