State rankings
Allergy-Friendly States
Hawaii has the highest Avg Indoor Allergy Score in 2026 (7.94), followed by Mississippi (7.51) and Arkansas (7.24). Nevada has the lowest (1.89).
Year 202649 of 51 states
Avg Indoor Allergy Score, 2026
Darker means higher. Click a place to highlight it.
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All 49 ranked
Highest first.
Distribution Median and middle halfThe median is the middle value: half of places are above it, half below. The middle half is the range holding the central 50% of places.More in the glossary →
Each dot is one state; the lines mark the median and the middle half.
Median
5.34
Middle half 3.81 – 6.44
Average
5.15
49 states
Highest
7.94
Hawaii
Lowest
1.89
Nevada
Data
Click a column to sort, a row to highlight that place on the charts.
49 states · # = rank by Avg Indoor Allergy Score
| # | |||
|---|---|---|---|
| 1 |  Hawaii | 7.94 | — |
| 2 |  Mississippi | 7.51 | 6.6 |
| 3 |  Arkansas | 7.24 | 8.23 |
| 4 |  Louisiana | 7.21 | 6.73 |
| 5 |  Alabama | 7.16 | 5.85 |
| 6 |  Florida | 6.9 | 7.69 |
| 7 |  West Virginia | 6.76 | 4.12 |
| 8 |  Kentucky | 6.61 | 5.71 |
| 9 |  Missouri | 6.51 | 6.43 |
| 9 |  Oklahoma | 6.51 | 9.18 |
| 11 |  Tennessee | 6.5 | 5.17 |
| 12 |  South Carolina | 6.49 | 7.07 |
| 13 |  Indiana | 6.44 | 4.76 |
| 14 |  Connecticut | 6.15 | 4.15 |
| 15 |  North Carolina | 6.13 | 5.82 |
| 16 |  Pennsylvania | 6.1 | 3.88 |
| 16 |  Kansas | 6.1 | 6.87 |
| 18 |  Georgia | 5.95 | 5.71 |
| 19 |  Ohio | 5.88 | 4.18 |
| 19 |  Rhode Island | 5.88 | 3.95 |
| 21 |  New Jersey | 5.72 | 4.49 |
| 22 |  Massachusetts | 5.65 | 3.54 |
| 23 |  Iowa | 5.52 | 4.18 |
| 24 |  Delaware | 5.36 | 4.97 |
| 25 |  Texas | 5.34 | 7.96 |
| 26 |  Virginia | 5.33 | 5.68 |
| 27 |  Nebraska | 5.28 | 5.51 |
| 28 |  Illinois | 5.13 | 4.01 |
| 29 |  New York | 5.12 | 3.13 |
| 30 |  Michigan | 5.05 | 3.2 |
| 31 |  Maryland | 5.04 | 5.51 |
| 32 |  Vermont | 4.94 | 2.04 |
| 33 |  New Hampshire | 4.82 | 2.52 |
| 34 |  Maine | 4.71 | 1.9 |
| 35 |  California | 4.65 | 6.29 |
| 36 |  Wisconsin | 4.61 | 2.86 |
| 37 |  Washington | 3.81 | 4.08 |
| 38 |  Oregon | 3.65 | 5.41 |
| 39 |  Minnesota | 3.5 | 2.31 |
| 40 |  Arizona | 3.31 | 7.28 |
| 41 |  New Mexico | 3.27 | 7.76 |
| 42 |  South Dakota | 3.17 | 3.54 |
| 43 |  Idaho | 3.02 | 6.12 |
| 44 |  North Dakota | 2.82 | 3.27 |
| 45 |  Colorado | 2.75 | 6.19 |
| 46 |  Montana | 2.68 | 3.1 |
| 47 |  Wyoming | 2.43 | 4.56 |
| 48 |  Utah | 1.97 | 4.42 |
| 49 |  Nevada | 1.89 | 6.02 |
What correlates with Avg Indoor Allergy Score (2026)?
Pearson r against 2,066 other state metrics sharing at least 30 states. Correlation is not causation.
Higher together
Places that have a higher Avg Indoor Allergy Score tend to score higher on these
Opposite directions
Places that have a higher Avg Indoor Allergy Score tend to score lower on these
Quick answers
- Which state has the highest Avg Indoor Allergy Score?
- Hawaii has the highest Avg Indoor Allergy Score in 2026, at 7.94, followed by Mississippi (7.51) and Arkansas (7.24).
- Which state has the lowest Avg Indoor Allergy Score?
- Nevada has the lowest Avg Indoor Allergy Score in 2026, at 1.89.
- What is the median Avg Indoor Allergy Score across US states?
- The median is 5.34 across the 49 US states with data in 2026.
- Where does this allergy-friendly states data come from?
- Rankodex compiles it from World Population Review and the primary sources it cites: The Best and Worst U.S. States for Allergies - House Fresh.