What an AQI Over 200 Means for Your Body
An AQI between 201 and 300 falls into the 'Poor' category, with recent data showing Delhi's levels climbing into this range. At this level, the air is saturated with fine particulate matter known as PM2.5 — microscopic pollutants so tiny they can bypass
your body's natural defences, lodge deep in your lungs, and even enter your bloodstream. This isn't just an irritant; it's a systemic stressor. The US Environmental Protection Agency warns that exposure can lead to decreased lung function, aggravated asthma, and increased respiratory symptoms for the general public, with more severe effects for sensitive groups. Prolonged exposure is linked to a host of chronic issues, from heart disease to reduced lung function.
The Common Discomforts Most People Feel
When pollution levels rise, most healthy individuals will experience some level of discomfort. These are the body's immediate, frontline reactions to the pollutants. You may notice a tickle or scratchiness in your throat, a runny nose, and mild coughing. Your eyes might feel itchy, watery, or have a slight burning sensation. For many, this is the extent of the symptoms. They are unpleasant but often temporary, acting as the body's alarm system that the air quality is poor. It's the persistence and severity of these symptoms that signal a bigger problem.
Respiratory Red Flags That Demand Attention
The line between irritation and a medical issue is crossed when symptoms become persistent or severe. You should seek a professional assessment if you experience a cough that doesn't go away or is particularly aggressive. The most critical signs involve your breathing. Any feeling of shortness of breath, especially while resting, is a major red flag. Another is wheezing—a high-pitched whistling sound when you breathe—which indicates that your airways are inflamed and constricted. Similarly, a feeling of pain, pressure, or tightness in your chest should never be ignored and warrants immediate medical attention.
When It's More Than Just Your Lungs
PM2.5 particles don't just stop at the lungs; their impact can be felt throughout the body. If your eye irritation goes beyond simple itchiness to include persistent redness, excessive watering that blurs vision, or a gritty feeling that won't go away, it's time to consult a doctor. The skin can also react to severe pollution, leading to unexplained rashes, hives, or intense itching, particularly in those with sensitive skin. Furthermore, don't dismiss symptoms like unusual fatigue, dizziness, or recurring headaches that coincide with high pollution days, as they can also be signs that your body is struggling to cope with the toxic load.
High-Risk Groups Must Act Sooner
For certain individuals, the threshold for seeking medical advice is much lower. People with pre-existing respiratory conditions like asthma or COPD can experience severe flare-ups even at moderate pollution levels. Children are especially vulnerable because their lungs are still developing and they breathe in more air relative to their body weight. The elderly, pregnant women, and those with heart conditions are also considered high-risk. For these groups, any new or worsening symptom—be it a cough, wheezing, or difficulty breathing—should prompt a swift consultation with a healthcare provider. They should avoid all physical activity outdoors when the AQI is in the 'Very Unhealthy' range (201-300).
How to Prepare for a Doctor's Visit
If you decide to see a doctor, being prepared can lead to a more effective consultation. Before your appointment, take note of your specific symptoms and when they started. Try to identify if they worsen at certain times of the day or in specific locations. Mention any pre-existing conditions you have, like asthma or heart disease. It's also helpful to ask clear questions: 'Could my symptoms be caused by the air pollution?', 'What are the warning signs I should watch for?', and 'What steps can I take to reduce my exposure and manage these symptoms?'. This information helps your doctor make an accurate assessment and provide personalised advice.
