Hot summer days mean more than just sweating. When sun, high temperatures, and the right weather conditions coincide, ground-level ozone can also become an issue. You don't necessarily notice it immediately: ozone is invisible, does not have a reliable smell, and cannot simply be 'cleaned away' at home.
For everyday life, a different schedule is often enough. Sports, strenuous errands, gardening, and extensive ventilation are better scheduled for the cooler times of the day on hot days. Children, the elderly, and sensitive individuals benefit from this in particular.
What is ozone anyway?
We are referring here to ground-level ozone. It does not originate directly from a single exhaust pipe or chimney, but forms under sunlight from precursor substances in the air. This is why high levels can occur especially on sunny, hot days.
Ozone can irritate the eyes and respiratory tract. Those who are sensitive, have asthma, or other respiratory problems should take warnings and current measurement values seriously and reduce physical exertion outdoors on days with high pollution.
Prefer sports in the morning instead of the afternoon
When heat and ozone combine, the afternoon is often the most unfavorable time for intensive exercise. This does not mean that no one is allowed to go outside. It means: plan exertion consciously.
- Schedule running, cycling, and training early: The morning is usually more pleasant than the hot middle of the day.
- Reduce intensity: Walking instead of interval training, a relaxed lap instead of a personal best.
- Watch for warning signs: Take burning eyes, coughing, a feeling of pressure, or unusual exhaustion seriously.
- Do not overexert children: Playing in the shade is better than a soccer match in the blazing sun.
- Drink enough: The article Drinking properly in the heat provides simple ideas for everyday life.
Those who train regularly can see hot days as maintenance days: shorter, calmer, shadier. For family activities, existing ideas like Game ideas for the beach and outdoor pool, also help, as long as breaks, shade, and water are planned.
Ventilation: short, early, and targeted
In the heat, ventilation is a matter of timing anyway. When ozone pollution is added, opening windows wide for a long time in the afternoon is rarely sensible. A short rhythm is more practical:
- Ventilate early: Cross-ventilate in the morning while it is still cooler outside.
- Darken during the day: Use curtains, roller blinds, or shutters so that the apartment does not heat up additionally.
- Check in the evening: Only ventilate for longer again when the air outside is noticeably cooler.
- No permanent tilted windows: They do little in the heat and can actually warm up the apartment.
For the apartment, the articles Cooling your apartment without air conditioning and Surviving tropical nights.
Bundle errands and tasks better
Ozone is no reason to panic, but a good occasion to de-stress your daily schedule. Those who can bundle shopping, pharmacy visits, post office trips, or errands with children save themselves the hottest hours.
- Do errands in the morning: Especially when longer walks or waiting times are involved.
- Choose shaded routes: Better to walk a few minutes longer than to wait in the blazing sun.
- Pack a water bottle: Even for short trips.
- Do not use the car as temporary storage: Medication, food, children, and animals do not belong in a hot car.
Especially in the heat, the existing articles Heat in the car and Storing medication correctly in the heat are useful as a supplement.
Who should be particularly careful
People who are more sensitive to air pollution or heat should be more attentive: children, the elderly, pregnant women, people with respiratory or cardiovascular diseases, as well as anyone who does heavy physical work or intensive sports.
For children, the following also applies: They do not always notice strain in time. Therefore, actively plan breaks, seek shade, and keep activities flexible. Sun protection remains important, even if the sky looks slightly hazy. This fits with Applying sunscreen correctly.
The simple daily plan for heat and ozone
- Ventilate and do heavy errands in the morning.
- Schedule sports and playing for the cooler hours.
- Prefer shade, breaks, and light activities at noon and in the afternoon.
- Drink enough and remind children regularly.
- Keep an eye on current information regarding heat and ozone.
Important: Anyone with symptoms should not 'push through'. Seek medical help in case of shortness of breath, severe circulatory problems, or unusual symptoms.
Sources and further information:
- Federal Environment Agency: Ozone – Heat increases pollution
- BMLUK: Ground-level ozone
- gesundheit.gv.at: Air pollutants and health risks
- gesundheit.gv.at: Dealing with heat
Article image: AI-generated symbolic image.
