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If you think there is a carbon monoxide leak in your home or building call 9-1-1!
Symptoms of Carbon Monoxide (CO) Poisoning
The below CO levels are measured in parts per million (ppm).
Symptoms & Exposure Details
Maximum allowable concentration for short term exposure in living area. no symptoms.
Maximum allowable concentration exposure in any 8-hour period. no symptoms.
No poisoning symptoms for long periods of time. Allowable for several hours.
Slight headache, tiredness, dizziness, and nausea after 2-3 hours. Maximum concentration for short-term exposure (15 minutes).
Frontal headache within 1-2 hours. Life-threatening after 3 hours.
Dizziness, nausea, and convulsions within 45 minutes. Unconsciousness within 2 hours. Death within 2-3 hours.
Headache, dizziness, and nausea within 20 minutes. Death within one hour.
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