Louisiana pollen and allergy seasons
July outlookModerate
Louisiana has a long humid season, with oak in early spring, grass through the warm months, and ragweed in the fall.
Twelve month pollen calendar
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F
M
A
M
J
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A
S
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D
LowModerateHighVery high
Dominant species in July
Grass
Typical peak in July
No clear peak this month
Worst month of the year
March
Best month of the year
January
What is active in July
Grass
Cities in Louisiana
| City | Today | Worst today | Typical in July |
|---|---|---|---|
| Slidell | Moderateas of Jul 15 | Grass | Moderate |
| Chalmette | Moderateas of Jul 15 | Grass | Moderate |
| Martin | Moderateas of Jul 15 | Grass | Moderate |
| Lacombe | Moderateas of Jul 15 | Grass | Moderate |
| New Orleans | Lowas of Jul 15 | Grass | Moderate |
| Mandeville | Lowas of Jul 15 | Grass | Moderate |
| Hammond | Lowas of Jul 15 | Grass | Moderate |
| Laplace | Lowas of Jul 15 | Grass | Moderate |
| Covington | Lowas of Jul 15 | Grass | Moderate |
| Reserve | Lowas of Jul 15 | Grass | Moderate |
| Springfield | Lowas of Jul 15 | Grass | Moderate |
| Ponchatoula | Lowas of Jul 15 | Grass | Moderate |
| Holden | Lowas of Jul 15 | Grass | Moderate |
| Madisonville | Lowas of Jul 15 | Grass | Moderate |
| Baton Rouge | Noneas of Jul 15 | None | Moderate |
| Shreveport | Noneas of Jul 15 | None | Moderate |
| Lafayette | Noneas of Jul 15 | None | Moderate |
| Lake Charles | Noneas of Jul 15 | None | Moderate |
| Metairie | Noneas of Jul 15 | None | Moderate |
| Monroe | Noneas of Jul 15 | None | Moderate |
| Kenner | Noneas of Jul 15 | None | Moderate |
| Bossier City | Noneas of Jul 15 | None | Moderate |
| Prairieville | Noneas of Jul 15 | None | Moderate |
| Marrero | Noneas of Jul 15 | None | Moderate |
| Central | Noneas of Jul 15 | None | Moderate |
| New Iberia | Noneas of Jul 15 | None | Moderate |
| Terrytown | Noneas of Jul 15 | None | Moderate |
| Ruston | Noneas of Jul 15 | None | Moderate |
| Bayou Cane | Noneas of Jul 15 | None | Moderate |
| Harvey | Noneas of Jul 15 | None | Moderate |
| Sulphur | Noneas of Jul 15 | None | Moderate |
| Zachary | Noneas of Jul 15 | None | Moderate |
| Shenandoah | Noneas of Jul 15 | None | Moderate |
| Natchitoches | Noneas of Jul 15 | None | Moderate |
| Gretna | Noneas of Jul 15 | None | Moderate |
| Estelle | Noneas of Jul 15 | None | Moderate |
| Thibodaux | Noneas of Jul 15 | None | Moderate |
| Opelousas | Noneas of Jul 15 | None | Moderate |
| Pineville | Noneas of Jul 15 | None | Moderate |
| Luling | Noneas of Jul 15 | None | Moderate |
| Broussard | Noneas of Jul 15 | None | Moderate |
| West Monroe | Noneas of Jul 15 | None | Moderate |
| Baker | Noneas of Jul 15 | None | Moderate |
| Gardere | Noneas of Jul 15 | None | Moderate |
| Destrehan | Noneas of Jul 15 | None | Moderate |
| Minden | Noneas of Jul 15 | None | Moderate |
| Crowley | Noneas of Jul 15 | None | Moderate |
| Moss Bluff | Noneas of Jul 15 | None | Moderate |
| Bayou Blue | Noneas of Jul 15 | None | Moderate |
| Morgan City | Noneas of Jul 15 | None | Moderate |
| Abbeville | Noneas of Jul 15 | None | Moderate |
| Inniswold | Noneas of Jul 15 | None | Moderate |
| Lecompte | Noneas of Jul 15 | None | Moderate |
| Presquille | Noneas of Jul 15 | None | Moderate |
| Cade | Noneas of Jul 15 | None | Moderate |
| Rayne | Noneas of Jul 15 | None | Moderate |
| Benton | Noneas of Jul 15 | None | Moderate |
| Cottonport | Noneas of Jul 15 | None | Moderate |
| Erath | Noneas of Jul 15 | None | Moderate |
| Breaux Bridge | Noneas of Jul 15 | None | Moderate |
| Scott | Noneas of Jul 15 | None | Moderate |
| Glenmora | Noneas of Jul 15 | None | Moderate |
| Oberlin | Noneas of Jul 15 | None | Moderate |
| Bastrop | Noneas of Jul 15 | None | Moderate |
| Welsh | Noneas of Jul 15 | None | Moderate |
| Gheens | Noneas of Jul 15 | None | Moderate |
| Carencro | Noneas of Jul 15 | None | Moderate |
| Gramercy | Noneas of Jul 15 | None | Moderate |
| Houma | No live reading | Not available | Moderate |
| Alexandria | No live reading | Not available | Moderate |
| Youngsville | No live reading | Not available | Moderate |
| River Ridge | No live reading | Not available | Moderate |
| Gonzales | No live reading | Not available | Moderate |
| Claiborne | No live reading | Not available | Moderate |
| Woodmere | No live reading | Not available | Moderate |
| Timberlane | No live reading | Not available | Moderate |
| Denham Springs | No live reading | Not available | Moderate |
| Patterson | No live reading | Not available | Moderate |
| Saint Martinville | No live reading | Not available | Moderate |
| Franklin | No live reading | Not available | Moderate |
| Elmwood | No live reading | Not available | Moderate |
| Vivian | No live reading | Not available | Moderate |
| Cut Off | No live reading | Not available | Moderate |
| Albany | No live reading | Not available | Moderate |
| Leesville | No live reading | Not available | Moderate |
| Pearl River | No live reading | Not available | Moderate |
| Church Point | No live reading | Not available | Moderate |
| Saint Francisville | No live reading | Not available | Moderate |
Today and worst today come from live readings where available. Typical shows the usual level for this month from the seasonal profile.
The Louisiana allergy season
Allergy levels in Louisiana peak in March, when oak pollen runs highest. The season moves through tree pollen around March, grass in April, weed pollen such as ragweed in September. Levels start to climb around February. The lowest pollen levels of the year arrive in January.
Common questions
When does allergy season start in Louisiana?
Pollen levels in Louisiana usually begin climbing in February and reach their highest point in March.
What is the worst month for allergies in Louisiana?
March is typically the worst month in Louisiana, driven by oak pollen.
When does ragweed season end in Louisiana?
Ragweed pollen in Louisiana usually fades by the end of November, after the first hard frost in colder areas.
When is the best time for allergies in Louisiana?
January usually brings the lowest pollen levels of the year in Louisiana.