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Real-time pollen data for Edinburg — updated daily.
Mesquite is Edinburg's dominant native tree allergen and one of the most prolific pollen producers in Texas. Mesquite trees are ubiquitous across the South Texas Plains, along roadsides, in rangeland, and in undeveloped areas. Pollen season runs March through June with heavy production. Mesquite pollen is highly allergenic and affects a majority of sensitized South Texas residents.
Huisache (sweet acacia) produces bright yellow flowers and allergenic pollen in late winter (January-March). Ebony, brasil, and retama are native South Texas species. Live oak produces heavy pollen February-April. Ornamental ash, elm, and mulberry are common in residential areas. Citrus trees (grapefruit, orange) flower February-April, producing detectable pollen from commercial groves and residential plantings. Palm trees (Washingtonia, Sabal) produce minimal allergenic pollen but are iconic in the landscape.
Bermuda grass dominates residential lawns, parks, and agricultural field borders. Buffalograss and native prairie grasses persist on rangeland. Johnson grass is a major roadside allergen. With 340 frost-free days, grass grows and pollinates nearly year-round in the Rio Grande Valley — a dramatically longer grass season than any other Texas region.
Distinctive Edinburg allergen category. Citrus flowering (February-April). Cotton flowering (June-August). Sorghum (May-September). Winter vegetables (October-March) including cabbage, onions, and carrots. Sugarcane. Agricultural pesticide and herbicide spray drift from surrounding farms creates respiratory irritation that amplifies biological allergen responses.
Ragweed is the primary fall allergen but arrives later and persists longer than in northern Texas due to the subtropical growing season. Pigweed (amaranth), lamb's quarters, Russian thistle, and kochia produce fall pollen. Sagebrush and dock contribute. The extended frost-free season means weed pollen persists well into November or December.
Subtropical humidity, irrigation from Rio Grande canal systems, and agricultural soil moisture create elevated mold year-round. Alternaria is particularly significant in agricultural areas. Cladosporium and Aspergillus are common. Post-hurricane and post-flood mold can reach catastrophic levels on the Valley's flat terrain where water drains slowly. Citrus grove and vegetable field decomposition adds agricultural mold sources.
Dust mites thrive in the Valley's subtropical humidity and warmth, reaching some of the highest concentrations in Texas. Pet dander is significant. Cockroach allergens are common in older housing and colonias. Indoor mold risk is elevated due to persistent outdoor humidity.
Severity: Moderate. No true dormant period in the Valley. Winter vegetable harvest (cabbage, onions, carrots) generates agricultural dust and organic particulates. Huisache begins producing pollen in January. Mesquite is dormant but grass pollen continues at low levels. Citrus groves in pre-bloom preparation. Dust mites remain elevated indoors. Snowbird winter residents arriving and encountering subtropical allergens for the first time.
Severity: Moderate to High. Huisache peaks with bright yellow flowers and heavy pollen (January-March). Citrus flowering begins (February-April) — grapefruit and orange groves produce distinctive pollen. Live oak begins pollination. Ash and elm produce early pollen. Grass pollen increases. Agricultural spray drift from winter vegetable and citrus operations.
Severity: Severe. Edinburg's worst allergy period. Mesquite pollen peaks March-June with enormous production. Live oak, huisache, ebony, and retama overlap. Grass pollen surges with Bermuda and Johnson grass. Citrus flowering continues. Cotton planting and early-season spraying begin. Multiple allergen types airborne simultaneously in subtropical heat.
Severity: High. Bermuda grass and Johnson grass dominate. Cotton flowering (June-August) releases agricultural pollen. Sorghum growing season. Summer heat frequently exceeds 100°F. Subtropical humidity amplifies mold and dust mites. Hurricane season begins June 1. Late-season mesquite pollen tapers.
Severity: High to Severe. Ragweed peaks. Pigweed, kochia, and lamb's quarters add weed pollen. Alternaria mold peaks in agricultural areas. Hurricane risk highest August-October — flooding events can trigger catastrophic mold on flat terrain. Cotton harvest generates dust and fiber particulates. Late-season grass pollen continues.
Severity: Moderate to High. Late ragweed and fall weeds persist into November (extended by 340 frost-free days). Winter vegetable planting begins with associated soil disturbance and agricultural dust. Citrus harvest season generates fruit-handling dust. First rare cool fronts provide modest relief. Mold remains elevated.
Edinburg sits in the Lower Rio Grande Valley with 340 frost-free days per year — a near-tropical growing environment fundamentally different from DFW, Houston, or Central Texas. This means allergens are active nearly year-round with no true dormant winter period. Mesquite, huisache, and subtropical trees produce pollen across extended seasons. Grass grows and pollinates 10-11 months of the year. Agricultural crop pollen from citrus, vegetables, cotton, and sorghum adds layers not found in urban Texas cities. If you've relocated from northern states or DFW, expect a dramatically longer and more diverse allergy season.
The Lower Rio Grande Valley is one of Texas's most intensive agricultural regions. Edinburg is surrounded by citrus groves (grapefruit, oranges), winter vegetable farms (cabbage, onions, carrots, tomatoes), cotton fields, sorghum, and sugarcane. Citrus flowering (February-April) produces distinctive pollen. Agricultural pesticide and herbicide spray drift creates respiratory irritation that amplifies biological allergen responses. Residents near agricultural land — particularly on the city's outskirts — experience the highest exposure. This agricultural allergen profile exists nowhere else in our Texas pages.
Edinburg is in the South Texas Plains vegetation area, dominated by mesquite, huisache (sweet acacia), ebony, brasil, live oak, and native grasses. Mesquite is one of Texas's most prolific pollen producers, peaking March through June. Huisache produces intensely fragrant yellow flowers and allergenic pollen in late winter. These native South Texas species create an allergen profile completely different from the oaks, elms, and pecans of DFW or the pines of East Texas.
Edinburg's subtropical humid climate maintains elevated humidity throughout much of the year, creating ideal conditions for dust mites. Unlike the drier climate of West Texas or the seasonal humidity of DFW, the Valley's warmth and moisture support dust mite populations at high levels nearly year-round. Run dehumidifiers, use allergen-proof mattress and pillow encasements, and wash bedding weekly in hot water. Air conditioning set below 50% indoor humidity is essential.
The Rio Grande Valley is vulnerable to tropical storms and hurricanes from June through November. Hurricane Beulah (1967) made landfall as a Category 3 near Brownsville. Severe flooding follows hurricane landfalls, creating catastrophic mold conditions on the Valley's flat, low-elevation terrain where water drains slowly. After any flooding event, mold remediation should begin within 24-48 hours. The Valley's subtropical warmth accelerates mold growth far faster than in cooler climates.
Hidalgo County is over 85% Hispanic/Latino. Spanish is widely spoken alongside English, and many residents are bilingual or Spanish-dominant. Telemedicine with board-certified allergists removes barriers to specialty allergy care for Valley families — particularly for agricultural workers, multi-generational households, and residents in underserved areas. HeyAllergy provides clear treatment instructions and family-inclusive consultation.
Edinburg has no true allergy-free period due to its 340 frost-free days. March through June brings peak mesquite, huisache, citrus, and tree pollen. Grass pollen runs March through November. August through November adds ragweed and fall weeds. Mold is elevated year-round with subtropical humidity. Citrus and agricultural crop allergens add seasonal layers from October through April.
Profoundly different. The Valley has 340 frost-free days (vs ~240 in DFW), subtropical rather than humid-continental climate, mesquite and huisache as dominant allergens (vs oak and cedar in DFW), citrus and winter vegetable agriculture, and near year-round grass pollen. The Valley has no Mountain cedar, no Piney Woods species, and no Blackland Prairie dynamics. Patients relocating between these regions experience dramatic shifts in allergy patterns.
Yes. The Rio Grande Valley is the center of Texas citrus production. Citrus flowering (February-April) produces pollen from groves surrounding the city. Agricultural pesticide and herbicide spray drift creates respiratory irritation that amplifies biological allergen responses. Residents near citrus groves and vegetable farms experience the highest agricultural allergen exposure.
Northern retirees who winter in the Valley often develop new allergies within 1-3 seasons. Subtropical allergens (mesquite, huisache, citrus, tropical grasses) don't exist in northern states. If you've developed new symptoms since wintering in the Valley, blood-based allergy testing identifies these subtropical triggers.
Sí. HeyAllergy ofrece citas de telemedicina con alergólogos certificados por la junta, con licencia en Texas. Sin lista de espera. Disponible en todo el Valle del Río Grande incluyendo Edinburg, McAllen, Mission, Weslaco, Pharr, San Juan, y comunidades circundantes.
Yes. HeyAllergy provides telemedicine appointments with board-certified allergists licensed in Texas. No waitlist. Available throughout the Rio Grande Valley including Edinburg, McAllen, Mission, Weslaco, Pharr, San Juan, and surrounding Hidalgo County communities.
HeyPak® sublingual immunotherapy drops are customized based on allergy blood test results. For Edinburg residents, this targets local mesquite, huisache, live oak, Bermuda grass, ragweed, citrus pollen, mold, and dust mite allergens specific to the Rio Grande Valley subtropical environment. Daily drops retrain your immune system with improvement in 3–6 months. Starting at $47/month.
HeyAllergy accepts Medicare and most major PPO health plans, including United Healthcare, Anthem Blue Cross Blue Shield, Cigna, Aetna, Humana, Oscar, and Tricare. Tax ID: 85-0834175.
Edinburg is a city of approximately 105,000 in Hidalgo County, deep South Texas, approximately 20 miles north of the US-Mexico border and 10 miles west of McAllen. As the county seat of Hidalgo County — the 9th most populous county in Texas with 870,781 residents — Edinburg is a key hub for commerce, education, and governance in the Lower Rio Grande Valley. Home to the University of Texas Rio Grande Valley (UTRGV), the city sits at approximately 100 feet elevation on a flat, subtropical plain at the junction of US-281 and US-107. This Rio Grande Valley positioning creates an allergen environment unlike anything in DFW, Houston, Central Texas, or East Texas.
Edinburg lies in the South Texas Plains vegetation area, featuring native mesquite, live oaks, chaparral, and distinctive subtropical species: huisache (sweet acacia), ebony, brasil, chapote, guayacán, and yucca. This is a semi-arid subtropical landscape fundamentally different from every other Texas ecoregion represented in our pages. Mesquite dominates the native tree canopy and is one of Texas's most prolific and potent pollen producers. The South Texas Plains' native vegetation has been significantly reduced by extensive farming, but mesquite, huisache, and chaparral persist on rangeland, along roadsides, and in undeveloped areas surrounding the city.
The Lower Rio Grande Valley is the center of Texas citrus production. Commercial grapefruit orchards (including the famous ruby red grapefruit) and orange groves have operated here since 1904. Edinburg is surrounded by citrus groves, winter vegetable farms (cabbage, onions, carrots, tomatoes, watermelons, cantaloupes), cotton fields, sorghum, and sugarcane. The 340 frost-free days and alluvial Rio Grande delta soils create one of the most intensive agricultural environments in the state. Citrus flowering (February-April) produces pollen, and year-round agricultural operations generate pesticide spray drift, soil dust, and crop-specific organic particulates.
Edinburg has a subtropical, semi-arid to humid climate with hot summers (frequently exceeding 100°F), mild winters (rare freezes that devastate citrus crops when they occur), and 340 frost-free days. Rainfall averages approximately 22-25 inches annually, concentrated in late summer and early fall. The Valley is vulnerable to tropical storms and hurricanes from June through November — Hurricane Beulah (1967) caused catastrophic flooding. The 2021 Winter Storm Uri brought unprecedented freezing temperatures that devastated Valley agriculture. This climate supports near year-round biological allergen activity with no true dormant period.
UTRGV's Edinburg campus is the largest in the university system, attracting students from across the Valley and northern Mexico. The university drives economic activity in education, healthcare, and research. Agriculture remains foundational: Hidalgo County leads Texas in cabbage, onions, and cantaloupe production. The Valley is also a major "snowbird" winter destination — tens of thousands of northern retirees spend winters here, exposing themselves to subtropical allergens they've never encountered.
Edinburg's 340 frost-free days producing near year-round allergen activity, South Texas Plains mesquite and huisache domination, citrus grove and winter vegetable farm pollen and spray drift, subtropical humidity driving year-round dust mite and mold conditions, hurricane-season flooding and rapid post-storm mold growth, and overwhelmingly Hispanic population requiring Spanish-language accessible care create an allergy environment unique in deep South Texas. HeyAllergy connects Edinburg residents with board-certified allergists through telemedicine. Patients receive allergy blood testing, personalized treatment, and HeyPak® sublingual immunotherapy drops custom-formulated for Rio Grande Valley subtropical allergens. Treatment starts at $47/month. No needles, no clinic visits, no waitlist.
