AIR QUALITY INDEX EXPLAINED: WHAT THE NUMBERS REALLY MEAN FOR YOUR HEALTH
Understand the air quality index and how it affects your health. Learn the meaning behind the numbers and how to protect yourself from polluted air.
Author name: Dr. Ethan Calderon
Dr. Ethan Calderon is an environmental engineer specializing in air quality modeling, atmospheric pollution control, and emission reduction systems. He holds a PhD in Environmental Engineering and has spent over a decade working with urban planning teams and sustainability consultancies to reduce airborne contaminants in densely populated cities. At Eco – Friendly Engineer, Ethan focuses on translating complex air quality data—such as particulate matter (PM2.5), nitrogen oxides, and carbon monoxide—into practical insights that policymakers, engineers, and eco-conscious readers can actually use. His writing balances scientific rigor with clarity, making even regulatory air standards approachable. Outside the lab and fieldwork, Ethan enjoys long-distance cycling, building DIY air sensors, and experimenting with indoor plant setups to test natural air purification methods. He’s a strong believer that cleaner air begins with informed engineering decisions and everyday awareness.
