When pollution rises and the air turns hazy, most people worry about travel or visibility. But one important question is often ignored: Is it safe to work out outdoors? Dr Shraddha Kulkarni, a pulmonologist with 15 years of experience, explains how to plan your workout on days with high AQI.
When you exercise, your breathing becomes deeper and faster. This means you inhale more pollutants such as PM2.5, PM10, nitrogen dioxide and ozone. These tiny particles can travel deep into your lungs, causing irritation, breathing difficulty and long-term harm. So, choosing the right time to exercise outdoors becomes very important.
Many people believe early morning is the best time to work out. But during pollution spikes, experts say the opposite. Cold air at night traps pollutants close to the ground. Between 5 am and 8 am, pollution can be at its worst. As the sun rises, the air warms and pollutants begin to disperse. This makes late morning (before 11 am) and afternoon (11 am to 3 pm) safer for outdoor exercise—only if the AQI is not poor or very poor.
But Dr Kulkarni stresses one rule for everyone: check the real-time AQI before stepping outside. Pollution levels change daily depending on weather and traffic, so there is no fixed “safe” hour.
If the AQI is poor, it is better to avoid outdoor exercise completely. High pollution can cause coughing, chest tightness, throat irritation and breathlessness even in healthy people. Those with asthma, COPD, allergic bronchitis or repeated respiratory infections must be extra careful.
On such days, indoor workouts are the best choice. Dr Kulkarni suggests using an air purifier if possible, keeping the room well-ventilated and choosing low-intensity exercises to reduce strain on the lungs.
A few lifestyle habits can help protect your lungs while staying active. Drinking enough water keeps mucus thin and reduces irritation. A good warm-up prepares your airways, and a slow cool-down helps them recover. It also helps to avoid busy roads and peak traffic times, where pollution levels are higher.
Pollution may remain a problem in many cities, but with careful planning and smart choices, your fitness routine does not need to stop.
