Best and Worst States for Grass Pollen Allergies Ranked (2023)
Understanding the impact of allergies on daily life is essential. Our expertly researched rankings are designed to help individuals seeking relief from grass pollen allergies, as well as those interested in discovering which states present the most significant challenges for residents with grass pollen sensitivities. This valuable information caters to the needs of anyone affected by grass pollen allergies or hay fever.
In this report, Wyndly provides a comprehensive evaluation of states across the United States, based on their average grass pollen PPM levels. The goal of this ranking is to assist allergy sufferers in determining which locations may present increased challenges during peak pollen season, focusing specifically on grass pollen allergies and hay fever.
What are the Five Best States for Grass Pollen Allergies?
What are the Five Worst States for Grass Pollen Allergies?
States Ranked by Lowest to Highest Grass Pollen Allergies
| State | Low to High PPM | |
| 1. | New Mexico | 21.60 |
| 2. | Utah | 38.69 |
| 3. | Kentucky | 40.19 |
| 4. | Arizona | 41.24 |
| 5. | Colorado | 45.81 |
| 6. | Washington | 46.09 |
| 7. | Nevada | 47.36 |
| 8. | Tennessee | 48.05 |
| 9. | California | 48.96 |
| 10. | Idaho | 49.65 |
| 11. | Mississippi | 50.14 |
| 12. | Indiana | 50.88 |
| 13. | Michigan | 52.10 |
| 14. | West Virginia | 52.25 |
| 15. | Wyoming | 53.25 |
| 16. | Georgia | 54.10 |
| 17. | Montana | 54.67 |
| 18. | Disctrict of Columbia | 55.11 |
| 19. | Wisconsin | 56.50 |
| 20. | North Dakota | 58.13 |
| 21. | Maine | 58.38 |
| 22. | Oregon | 58.88 |
| 23. | Ohio | 59.50 |
| 24. | Vermont | 59.96 |
| 25. | New York | 61.08 |
| 26. | New Hampshire | 61.35 |
| 27. | Alabama | 62.03 |
| 28. | Minnesota | 62.43 |
| 29. | Connecticut | 62.72 |
| 30. | Massachusetts | 63.70 |
| 31. | Iowa | 63.85 |
| 32. | South Carolina | 64.95 |
| 33. | Rhode Island | 65.90 |
| 34. | New Jersey | 66.00 |
| 35. | Illinois | 67.69 |
| 36. | Pennsylvania | 68.01 |
| 37. | South Dakota | 68.22 |
| 38. | Nebraska | 70.82 |
| 39. | Florida | 72.67 |
| 40. | North Carolina | 73.60 |
| 41. | Missouri | 75.78 |
| 42. | Virginia | 76.74 |
| 43. | Delaware | 89.53 |
| 44. | Arkansas | 90.59 |
| 45. | Louisiana | 96.92 |
| 46. | Maryland | 99.95 |
| 47. | Kansas | 100.01 |
| 48. | Texas | 112.56 |
| 49. | Oklahoma | 114.37 |
No data collected for Hawaii and Alaska.
Wyndly Summer 2023 Pollen Report Methodology
For each city, Wyndly obtained monthly pollen PPMs (pollen grains per cubic meter) for each form (tree, grass, and weed) from February 2022 - May 2023. Data were obtained from Pollen Sense, LLC Automated Particulate Sensors (APS). These sensors automatically detect particulate matter collected from ambient air, and use a neural network algorithm to identify individual pollen species and calculate daily pollen counts.
Yearly averages are calculated by summing the three allergen averages per month of data for a total monthly PPM, summing all monthly total PPMs, then dividing by 12 (month count). Used for per-city average, state average, and total USA average. Season comparisons are done by summing the months of Spring (March, April, May) for 2023 and 2022. If the absolute of the (2023-2022)/2022 is ≤ 0.05, the years were about the same. Otherwise, the more PPM, the worse the season.