LA · Allergy Season Guide
Louisiana Allergy Season Guide
Louisiana experiences a humid subtropical climate with long, hot, humid summers and short, mild winters.
Summary
Louisiana has 0 active PollyMap collection sites, and is seeking partners in 5 additional cities. Tree pollen typically dominates early spring, grass pollen peaks in late spring and early summer, and weed pollen (including ragweed) extends from late summer through fall.
PollyMap collection status across Louisiana
Statewide allergy overview
Louisiana experiences a humid subtropical climate with long, hot, humid summers and short, mild winters.
Oak, pine, cedar, and pecan create an intense, early spring tree season — sometimes coating cars in yellow pine pollen by March. Bermuda and Bahia grass pollinate from late spring through fall, and ragweed dominates the late-summer weed load.
Year-round humidity makes the Southeast one of the highest mold-load regions in the country, with Cladosporium and Alternaria peaking after summer thunderstorms and tropical systems.
Allergy patterns vary by elevation and proximity to coast or mountains within Louisiana, but most of the state shares a common seasonal rhythm of spring tree pollen, summer grass pollen, and late-summer to fall weed pollen.
Louisiana allergy calendar
Month-by-month intensity for the four major airborne allergen categories.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tree | Mod | High | V.High | V.High | High | Mod | Low | Low | Low | Low | Low | Mod |
| Grass | Low | Low | Mod | High | V.High | V.High | High | Mod | Mod | Low | Low | Low |
| Weed | Low | Low | Mod | Mod | Mod | Mod | High | V.High | V.High | High | Mod | Low |
| Mold | Mod | Mod | Mod | High | High | V.High | V.High | V.High | V.High | High | Mod | Mod |
Top airborne molds
Major city guides in Louisiana
LA
New Orleans
View New Orleans allergy season guide →
LA
Baton Rouge
View Baton Rouge allergy season guide →
LA
Shreveport
View Shreveport allergy season guide →
LA
Lafayette
View Lafayette allergy season guide →
LA
Lake Charles
View Lake Charles allergy season guide →
Latest PollyMap reports for Louisiana
The PollyKit — $39.99
Test the air at your exact address.
Test the air at your exact address — not a regional forecast, your actual air. Tests for pollen, mold spores, dust mites, and other airborne particles. Ships nationwide. Results in 3–5 days.
- 1
Hang
Hang the PollyKit indoors or outdoors at your home, office, or classroom for 24–48 hours.
- 2
Return
Mail it back in the included prepaid envelope.
- 3
Results
Receive your personal lab report showing what's actually in your air.
Frequently asked questions
Get local pollen alerts for Louisiana.
Subscribe to PollyMap email alerts and be notified when new local reports are published in your area.
Subscribe to alerts