Pollen today
Loading today’s values…
Ragweed is moderate in McAllen today.
Tree and grass pollen are very low. Ragweed should stay moderate through Saturday.
Today in McAllen, TexasTuesday, November 3
Weed3ModerateRagweed
Tree1Very lowElm
Grass1Very lowGrasses
Next four days, highest level each day:
Wed3Moderate
Thu3Moderate
Fri3Moderate
Sat3Moderate
Source: Includes pollen data from GoogleGoogle Maps
Source: Includes pollen data from GoogleIncludes data from Google Maps
Plant by plant
Google’s index for each plant it models in McAllen today. A plant out of season has no index.
Plants in McAllenTuesday, November 3
Grasses1Very low
AlderNo index
AshNo index
BirchNo index
CottonwoodNo index
JuniperNo index
MapleNo index
OakNo index
PineNo index
Source: Includes pollen data from GoogleGoogle Maps
Weather and air in McAllen
The forecast that moves pollen around, and the air beside it.
Weather forecast
- This Afternoon
- Mostly Sunny. High 93 °F. Wind NNW 5 to 9 mph. 8% chance of precipitation.
- Tonight
- Slight Chance Rain Showers. Low 68 °F. Wind N 8 mph. 20% chance of precipitation.
Forecast: National Weather Service, updated 2:00 pm CT.
Pollen alerts for McAllen by email
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McAllen’s year in pollen
Each thread is one kind of pollen, and each square is one week, colored by that week’s highest level.
Records for McAllen began on October 14, 2026. Each week adds a square.
Highest level each week, November 2025 to November 2026, from each day’s forecast.
Tree
Grass
Weed
0 None1 Very low2 Low3 Moderate4 High5 Very highThis weekNot recorded
See it as a table
| Week | Tree | Grass | Weed |
|---|---|---|---|
| Oct 28 to Nov 3 | 1 Very low | 1 Very low | 3 Moderate |
| Oct 21 to Oct 27 | 1 Very low | 1 Very low | 4 High |
| Oct 14 to Oct 20 | 1 Very low | 2 Low | 4 High |
Source: Includes pollen data from GoogleIncludes data from Google Maps
Beyond today’s pollen
What this forecast doesn’t measure, and when to get help.
No mold level
Google’s index covers tree, grass and weed pollen only, so there is no mold level for McAllen on this page. The National Allergy Bureau publishes pollen and mold counts measured at its stations. Our guides cover common molds such as Alternaria, Cladosporium and Aspergillus.
No indoor allergens
The forecast doesn’t cover allergens indoors either: dust mites, cockroaches, mice, cats and dogs. Our guides explain each one, starting with dust mites and cats.
Asthma in McAllen
An estimated 8.4% of adults in the city of McAllen have current asthma, according to the CDC’s PLACES estimate for 2023 (95% confidence interval: 7.5% to 9.4%). It is a statistical estimate from national survey data, not a count.
Allergists in the McAllen area
2 allergists enrolled in Medicare practice in the McAllen area: 0.22 for every 100,000 people, fewer than the 1.22 across the US. The count doesn’t show how soon you can get an appointment. See the doctors listed in the McAllen area, or how every state and metro compares.
AllergyNest count from CMS’s Doctors and Clinicians file (October 2026) and Census population estimates for 2025.
McAllen’s pollen seasons
The geography, climate and plants behind each season here, with a source for every fact.
Freezes are absent from a typical year at McAllen’s airport, where winters average about 65 °F.1 Texas Parks and Wildlife describes the South Texas Brush Country as plains of thorny shrubs and trees, with scattered patches of palms and subtropical woodlands in the Rio Grande Valley.2 Average monthly rainfall there is lowest in winter and highest in spring, in May or June, and in fall, in September.2
The plains were once covered with open grasslands and a scattering of trees.2 Today thorny brush such as mesquite, acacia and prickly pear is the primary vegetation, mixed with areas of grassland.2 Deeper soils support taller brush, such as mesquite and spiny hackberry, while short, dense brush grows on shallow caliche soils.2 Forested areas of the brushlands included live oak mottes and taller riparian forests along the Rio Grande.3
Sources
- U.S. Climate Normals 1991–2020: McAllen Miller International Airport (USW00012959). NOAA National Centers for Environmental Information. Read on October 15, 2026.
- Texas Ecoregions. Texas Parks and Wildlife Department. Read on October 15, 2026.
- Ecoregional Bird Checklists, Texas Partners in Flight. Texas Parks and Wildlife Department. Read on October 15, 2026.
Questions about pollen in McAllen
Answered from the values on this page.
Is pollen high in McAllen today?
No. The highest level in McAllen today, Tuesday, November 3, is moderate (3 on the 0 to 5 index), led by ragweed. Weed pollen is moderate, tree pollen is very low and grass pollen is very low.
Which pollen is in the air in McAllen today?
According to Google’s model: Ragweed (moderate), elm (very low) and grasses (very low). Plants Google doesn’t model, and mold, aren’t included.
Will pollen be higher tomorrow in McAllen?
No. Google’s forecast for tomorrow, Wednesday, is moderate (3 on the 0 to 5 index), the same as today. Over the next four days, the highest forecast is moderate, on Wednesday.
Is this a pollen count?
No. It’s Google’s modeled pollen index, from 0 (none) to 5 (very high), calculated for the location of central McAllen. A pollen count is the number of pollen grains measured in a cubic meter of air at a counting station. How our pollen index works.
When does this page update?
Twice a day. We fetch new values soon after midnight in McAllen, so each day starts with its own values, and again after Google’s daily model run, usually by about 9:30 am CT. Each section shows when its values were retrieved.
How long has AllergyNest recorded pollen in McAllen?
Since October 14, 2026. The year in pollen above fills in as each day is recorded, and weeks before then show no data. Google doesn’t provide past values, so nothing earlier can be added.
Source: Includes pollen data from GoogleIncludes data from Google Maps