Delhi: As the heatwave intensifies in the country, the most common topic of discussion among the public is the temperature. People often ask whether the mercury reached 42 degrees Celsius or 45 degrees Celsius today. However, environmental scientists say that the real danger lies not just in temperature data, but in the moisture in the air, or humidity, which is invisible but has a direct and serious impact on the body.
According to scientists, sometimes a humid heat of 38 degrees Celsius feels more dangerous and unbearable than a dry heat of 44 degrees Celsius. This is because when the air is high in humidity, the body cannot sweat properly, making it difficult to regulate body temperature. This situation increases heat stress, which can prove fatal in many cases.
A new analysis by Climate Central, an international organization that studies climate change, has revealed that dangerous humid heat is rapidly increasing worldwide. The report states that over the past few decades, the number of days when the combination of temperature and humidity approaches the human body’s tolerance limit has increased.
Experts believe this situation is a serious concern for densely populated countries like India. In many parts of India, the heat and humidity levels are both extremely high, making people feel much hotter than the actual temperature. This is why people suffer from extreme humidity even during the pre- and post-monsoon seasons.
According to the report, humid heat has the greatest impact on children, the elderly, and those with pre-existing conditions. Prolonged exposure to such conditions can lead to problems such as dehydration, heat stroke, fatigue, and difficulty breathing. Scientists say this is not just a weather problem but is becoming a serious health risk.
Experts also point out that while we traditionally consider temperature alone as a measure of heat, the “heat index,” the combined effect of temperature and humidity, provides a more accurate picture. Sometimes, this index reflects heat perceived 5 to 10 degrees above normal temperatures, which reflects the actual stress on the body.
This problem is being exacerbated by climate change. Deforestation, increasing pollution, and greenhouse gas emissions have disrupted the balance of humidity and heat in the atmosphere. Consequently, humidity levels are steadily rising during summer, and the intensity of heatwaves is increasing.
In India, extreme heat and humidity have increased pressure on healthcare systems in many states over the past few years. Hospitals have reported an increase in cases of heat stroke and dehydration. Experts say that if timely action is not taken, the situation could worsen in the coming years.
Scientists have advised people not to rely solely on temperature data, but to also consider the weather’s humidity and heat index. Additionally, it is important to drink adequate water, wear light clothing, and avoid the midday sun.
The government and the Meteorological Department are also now working to strengthen the heat alert system so that people can receive timely information not only about temperature but also about humidity and the actual heat threat.
Thus, in the changing climate pattern, humid heat is emerging as a new and serious challenge, which could have a major impact on both health and life in the future.
