NM · Allergy Season Guide
New Mexico Allergy Season Guide
New Mexico experiences a hot, arid desert climate with long dry summers, mild winters, and very low annual rainfall.
Summary
New Mexico 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 New Mexico
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No allergy clinic is reporting from New Mexico yet. Until one does, you can order your own PollyKit — a simple air sampler you hang outdoors or indoors. Send it back and the PollyKit Lab shows you exactly what's floating in your air.
- Pollen from local trees, grasses and weeds
- Airborne mold spores
- Dust mites and other indoor allergens
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Statewide allergy overview
New Mexico experiences a hot, arid desert climate with long dry summers, mild winters, and very low annual rainfall.
Tree pollen — especially mulberry, olive, ash, juniper, and mesquite — is the dominant trigger in late winter and early spring. Bermuda grass is the most common warm-season grass, and ragweed and tumbleweed (Russian thistle) drive the late-summer through fall load.
Outdoor mold counts in the desert are generally lower than in humid regions, but Alternaria and Cladosporium spikes follow monsoon storms in July and August, and indoor mold is common where evaporative cooling, leaks, or irrigation overspray create damp microclimates.
Allergy patterns vary by elevation and proximity to coast or mountains within New Mexico, but most of the state shares a common seasonal rhythm of spring tree pollen, summer grass pollen, and late-summer to fall weed pollen.
New Mexico 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 | Mod | High | High | Mod | Low |
| Grass | — | Low | Mod | High | High | V.High | V.High | High | High | Mod | Low | — |
| Weed | Low | Low | Mod | Mod | High | High | High | V.High | V.High | High | Mod | Low |
| Mold | Low | Low | Mod | Mod | Mod | Mod | High | High | Mod | Mod | Low | Low |
Seasonal focus · Oct–Dec
October–December in New Mexico
New Mexico's fall allergy season is driven by ragweed and desert weeds like Russian thistle and sagebrush, which run from August through October. The state's dry air lets pollen travel long distances, and windy fall days can keep counts high even as temperatures drop.
By November and December, pollen levels finally ease across most of New Mexico, though the mild southern desert around Las Cruces stays active longer than the high country. Juniper pollen — a major spring allergen here — can begin appearing surprisingly early in mild winters.
Top weed pollens
Top airborne molds
Major city guides in New Mexico
NM
Albuquerque
View Albuquerque allergy season guide →
NM
Las Cruces
View Las Cruces allergy season guide →
NM
Rio Rancho
View Rio Rancho allergy season guide →
NM
Santa Fe
View Santa Fe allergy season guide →
NM
Roswell
View Roswell allergy season guide →
Latest PollyMap reports for New Mexico
Frequently asked questions
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