Radon zones in Hawaii
The EPA assigns every county in Hawaii to one of three radon potential zones. No county in Hawaii is in Zone 1. That is a statement about predicted county averages, not about any individual home - homes above the action level are found in all three zones.
The map
Radon potential across Hawaii
Every county in Hawaii, filled by the zone the EPA assigns it. Zones follow geology rather than county lines, so the colour usually changes where the bedrock does, not where the border is.
Hover a county · click to open it
County by county
All 5 Hawaii counties
| County | Zone | Population | COPD | Smoking | Lung ca. deaths |
|---|---|---|---|---|---|
| Hawaii County | 3 | 208k | 7.1% | 14.5% | 24.1 |
| Honolulu County | 3 | 989k | 4.7% | 9.8% | 23.2 |
| Kalawao County | 3 | 81 | 9.8% | 16.6% | - |
| Kauai County | 3 | 74k | 6.0% | 12.0% | 22.1 |
| Maui County | 3 | 164k | 5.9% | 13.2% | 23.6 |
Zones from the EPA Map of Radon Zones. COPD and smoking are CDC PLACES model-based estimates of adult prevalence. Lung cancer death rates are age-adjusted deaths per 100,000 per year, 2019-2023, from NCI State Cancer Profiles. A dash means the source does not report a value for that county.
Other states
Radon zones elsewhere
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming