Understanding Carbon Monoxide Levels: Quick Insights
June 17, 2026 · The Clime Team

Carbon monoxide (CO) is a colorless, odorless gas produced by burning fuels like gas, oil, kerosene, wood, or charcoal. At high concentrations, CO can be fatal within minutes. (epa.gov)
What Are Safe and Dangerous CO Levels?
- 0–9 ppm: Normal ambient levels.
- 10–34 ppm: Common in areas with traffic or unvented stoves; prolonged exposure may be harmful.
- 35 ppm: Maximum allowable concentration for an 8-hour period.
- 70 ppm: Headaches, fatigue, and nausea after 2–3 hours of exposure.
- 150–200 ppm: Headaches, dizziness, and disorientation within 2–3 hours.
- 400 ppm: Life-threatening after 3 hours.
- 800 ppm: Dizziness, nausea, and convulsions within 45 minutes; death within 2–3 hours.
- 1,200 ppm: Immediate physiological effects; death within 1 hour.
- 6,400 ppm: Death within 10–15 minutes. (thegarage.guide)
How to Protect Yourself from CO Exposure
- Install CO Detectors: Place alarms outside every sleeping area.
- Regular Maintenance: Have fuel-burning appliances inspected annually.
- Proper Ventilation: Ensure vents and chimneys are clean and unblocked.
- Safe Practices: Never use charcoal grills or generators indoors.
- Vehicle Safety: Never leave a car running in an attached garage. (epa.gov)
Recognizing CO Poisoning Symptoms
Symptoms include headaches, dizziness, confusion, nausea, and fainting. If you experience these, get fresh air immediately and seek medical attention. (epa.gov)
Clime's Role in CO Safety
Clime offers advanced CO detectors that provide real-time monitoring and alerts, ensuring your home remains safe from CO hazards.
Highlights:
- Protect Your Family and Yourself from Carbon Monoxide Poisoning | US EPA, Published on Monday, October 06
- Carbon monoxide: What you need to know | Poison Control
- Carbon Monoxide Detector Going Off? Here's What to Do Next | Vivint, Published on Monday, May 30