Wildfire smoke isn’t the only air pollutant of concern during Spokane’s summers. In fact, when we aren’t experiencing wildfire smoke, ozone is often the predominant pollutant driving the Air Quality Index values. So, what do you need to know?
Good up high, bad nearby:
Unlike the ‘good’ ozone found in Earth’s upper atmosphere, where it protects us from UV radiation, ozone at ground level is a harmful air pollutant. Exposure to elevated ground-level ozone pollution can cause respiratory problems and aggravate asthma in children. Even healthy adults can experience a 15-20% reduction in lung function from prolonged exposure to low levels of ground-level ozone pollution.
Ozone isn’t emitted; it’s formed.
Ozone forms most readily on hot, sunny days. Unlike most air pollutants, nothing “emits” ozone into the ambient (outdoor) air. Rather, it’s formed in the atmosphere by a photochemical reaction. The chemicals that form ozone are nitrogen oxides (NOx) and volatile organic compounds (VOCs) and they come from a variety of products and activities, such as transportation, paints and solvents, household chemicals and some industrial processes.
Take Care, Check the Air.
Because ozone pollution peaks on the hottest days of summer, it’s another good reason to spend more time indoors in a cool, clean air space. It’s important to monitor the Air Quality Index and take health-based precautions. When ground-level ozone pollution reaches unhealthy levels, limit strenuous outdoor activity. If you exercise outdoors, do so early when ozone pollution is lower. Also, pay attention to respiratory symptoms such as coughing, wheezing, and other forms of respiratory discomfort. See your health care provider if necessary.
You can help reduce ozone formation! Here is a list of ideas:
- Conserve electricity by setting your air conditioner to a higher temperature.
- Choose a cleaner commute—share a ride to work or use public transportation. Bicycle or walk to errands when possible.
- Refuel cars and trucks after dusk.
- Combine errands to reduce vehicle trips.
- Limit engine idling.
- Don’t purchase products that contain VOCs.
- Use manual or electric yard and garden tools.
- Hold off using gas-powered lawn equipment until evening or a cooler day.
- If you use a charcoal barbecue, start it with an electric probe instead of lighter fluid.
Enjoy this short video about ozone pollution.
