What is AHI, and what AHI score is dangerous?
Last updated: 2026-09-06
Quick answer
AHI (Apnea–Hypopnea Index) is the number of breathing pauses per hour of sleep. Under 5 is normal, 5–15 mild, 15–30 moderate, and over 30 is severe obstructive sleep apnea. An AHI above 30, or a high AHI with heart disease, diabetes or very low oxygen, is the most concerning and usually needs treatment.
What counts as a dangerous AHI?
An AHI over 30 (severe) is the range most strongly linked to long-term risks such as high blood pressure, heart rhythm problems and daytime accidents. But 'dangerous' also depends on context: a moderate AHI with existing heart disease, poorly controlled diabetes or oxygen dropping below 90% deserves prompt attention too.
The AHI ranges
Normal: under 5. Mild: 5–14.9. Moderate: 15–29.9. Severe: 30 or above. Treatment decisions weigh the AHI against your symptoms, oxygen levels and other health conditions rather than the number alone.
What to do about a high AHI
A high AHI is not an emergency, but it should not be ignored. Share the report with a doctor, who may advise CPAP or other measures. If your report shows a high AHI, our team can help you understand next steps and, if therapy is advised, arrange a CPAP rental so you can try it before buying.
Related: sleep study pricing · cost in Kerala · CPAP & BiPAP rental · home test in Kozhikode · book a test
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