What to Do in Houston When You Think It Might Be Heat Stroke
A decision guide for Houston residents with specific symptom thresholds, named ERs and urgent care chains, and current cooling center locations
A decision guide for Houston residents with specific symptom thresholds, named ERs and urgent care chains, and current cooling center locations
When someone in your household stops making sense mid-sentence—mid-walk, mid-shift—that is not a heat exhaustion symptom to monitor. That is heat stroke. Act now, before you finish reading this paragraph.
Houston’s real heat danger is the heat index, not the temperature reading. At 95°F with 70% relative humidity—a typical Houston July combination—the heat index registers above 110°F. The difference between heat exhaustion and heat stroke is not a matter of degree. It’s a clinical threshold that determines whether you drive someone to urgent care or call 911 and stay on the line.
This guide gives you the chart, the decision tree, the first-aid steps, specific Houston facilities with addresses, and every number you might need. Read it before you need it. Screenshot the resource box at the end.
The Single Question That Decides Everything
Is the person mentally altered?
Confused. Slurring. Disoriented about where they are or what day it is. Unresponsive or hard to wake. Behaving strangely. Or: hot to the touch but not sweating, after prolonged heat exposure.
Yes to any of those? Heat stroke. Call 911. Do not put them in your car. Do not wait to see if they improve. Do not give them anything to drink. Call 911.
Everything else in this guide flows from that threshold. Mental status is the marker. If it’s altered, the decision is already made.
Heat Exhaustion vs. Heat Stroke
These are not the same illness at different intensities. They’re medically distinct, and the difference determines which resource can actually help.
| Heat Exhaustion | Heat Stroke | |
|---|---|---|
| Mental status | Alert, oriented, knows where they are | Confused, slurred speech, disoriented, unresponsive |
| Skin | Heavy sweating, pale or flushed, clammy | Hot and dry OR hot and sweating (sweating does not rule it out) |
| Body temperature | Elevated but usually below 104°F | At or above 104°F |
| Nausea/vomiting | Common | Possible |
| Headache | Common | Common |
| Muscle cramps | Common | Possible |
| Dizziness/fainting | Common; may faint briefly | Possible, but confusion is the key marker |
| Pulse | Fast, weak | Fast, strong or irregular |
| What to do | Cool down, oral fluids if alert, urgent care if symptoms persist | Call 911. This is a medical emergency. |
Sources: Centers for Disease Control and Prevention Heat-Related Illness guidelines; American Heart Association emergency response protocols.
The classic teaching that heat stroke means “dry skin” is incomplete—and that misconception has probably cost lives. Exertional heat stroke, the type that hits construction workers, athletes, and people laboring outdoors, frequently presents with sweating. Do not use the presence or absence of sweat to overrule a mental status change. Confusion means heat stroke until proven otherwise.
911, Urgent Care, or Home
Call 911 if there is any altered mental status: confusion, slurred speech, unresponsiveness, seizure, loss of consciousness, or hot skin without sweating after prolonged heat exposure. Say: “I think someone has heat stroke.” Give your location. Stay on the line. Begin cooling immediately (see below).
Do not drive them. Houston Fire Department paramedics carry cooling protocols and IV capability. The instinct to throw someone in the car and race to the Medical Center is understandable. It’s wrong. Getting the ambulance to them is faster than getting a confused, deteriorating person into a vehicle and through traffic.
Go to urgent care if the person is alert but symptomatic—heavy sweating, weakness, dizziness, nausea, muscle cramps, headache, or a brief faint followed by full recovery. Urgent care can handle heat exhaustion in an alert adult. Some Houston-area locations have IV hydration capability, which is the primary treatment. Call ahead before you drive; not every location has it available at every hour. Any question about mental status means ER or 911.
Treat at home only for mild symptoms in a healthy adult: slight dizziness after yard work, minor nausea, muscle cramps, in someone who is sweating normally and fully alert. Move to air conditioning immediately. Drink cool water or a sports drink. No alcohol, no caffeine. Apply a cold, wet cloth to neck and wrists. Rest and monitor.
Symptoms that don’t improve within 30 minutes warrant urgent care. Vomiting, inability to keep fluids down, or any mental status change means escalate. Heat illness can move faster than it looks.
First Aid Before the Ambulance Arrives
If you’ve called 911 and are waiting with someone you believe has heat stroke:
Get them out of the heat immediately. Shade, air conditioning, or the shadow of a vehicle with the AC running. Every minute in the heat is additional injury.
Strip outer layers—jacket, hat, shoes. Don’t wrestle with them if they’re resistive. Focus on the most effective cooling.
Apply ice or cold, wet cloths to the neck, armpits, and groin. These are where large blood vessels run close to the skin; cool the blood there and you cool the core. If you have a cooler in the vehicle—and if you spend summers outdoors in Houston, you should—use it.
Wet the skin with cool water and fan aggressively. Houston’s humidity suppresses evaporation, but evaporative cooling still works when combined with ice on those vascular sites. Use a shirt, a piece of cardboard, whatever’s available.
Do not give fluids to someone who is confused. Aspiration is a real risk. Do not give aspirin or ibuprofen. Neither is effective against heat-related hyperthermia and both can complicate the metabolic picture.
If they’re conscious, let them lie down with legs slightly elevated. If unconscious and breathing, recovery position on their side. If they stop breathing, start CPR and tell the 911 dispatcher immediately.
Track whether the confusion is improving or getting worse. Report that to paramedics when they arrive.
Sources: American Heart Association Heartsaver First Aid guidelines; American Red Cross heat emergency protocols.
Which Houston ERs Handle Heat Stroke
Heat stroke requires hospital-level care because the treatment isn’t simply “cool them down.” It requires intensive cooling protocols, continuous neurological monitoring, IV fluids managed by rate and composition, and labs to assess kidney function, electrolytes, and clotting—all of which heat stroke can damage. Urgent care, even a well-staffed one, isn’t built for that.
In our health & wellness coverage, we’ve noted that knowing which facility to reach before an emergency is one of the most consistently overlooked pieces of preparation Houston residents can do.
Memorial Hermann Texas Medical Center, 6411 Fannin St., Houston, TX 77030. Level I Trauma Center. Largest trauma program in the region. 24-hour emergency department.
Ben Taub Hospital (Harris Health System), 1504 Taub Loop, Houston, TX 77030. Level I Trauma Center. The county’s public hospital and the primary safety-net facility for uninsured and underinsured residents. If you or someone you’re helping doesn’t have insurance, this is the right destination.
Houston Methodist Hospital—Texas Medical Center, 6565 Fannin St., Houston, TX 77030. Level I Trauma Center. Located blocks from Ben Taub and Memorial Hermann—if you’re coming from the highway, the three major Level I centers are essentially walking distance from each other.
St. Joseph Medical Center, 1401 St. Joseph Pkwy., Houston, TX 77002. Level II Trauma designation, full emergency department. Relevant for residents and unhoused individuals in the downtown corridor who don’t have transportation to the Medical Center.
For Uninsured Residents—Ben Taub and the Harris Health Gold Card
⚠️ Reporter verification required on current enrollment process and any 2026 changes.
Ben Taub operates under Harris Health System, which offers the Gold Card financial assistance program for Harris County residents who meet income eligibility thresholds. Gold Card holders receive care at Harris Health facilities on a sliding-scale or no-cost basis.
If you or someone you’re helping is uninsured and in a heat stroke emergency, Ben Taub is the right choice. Do not avoid the ER because of cost when mental status is altered. Harris Health Financial Assistance line: 713-566-6400 (verify before publication). You don’t need a Gold Card to be seen in the emergency department—enrollment is a separate process that can be initiated after stabilization.
Houston Urgent Care for Heat Exhaustion
⚠️ Cash prices for all locations below require direct verification by calling each chain before publication. IV hydration availability varies by location and must be confirmed by phone. All price estimates have been removed pending that verification.
Urgent care is appropriate only for alert patients with heat exhaustion, not heat stroke. If there’s any mental status change, go to an ER. The urgent care waiting room is not where you want to discover you waited too long.
NextCare Urgent Care operates multiple Houston-area locations including Katy, Pearland, Clear Lake, and the Heights. Call ahead to confirm IV hydration availability and current self-pay pricing before driving.
Memorial Urgent Care, an independent Houston-area chain with locations in the Memorial, Katy, and Sugar Land corridors, should be contacted by phone to confirm IV availability and self-pay pricing before you drive.
CommunityMed Family Urgent Care has locations in Katy, Cypress, Humble, and Pearland. Check transparent pricing at communitymed.com and confirm IV availability by phone before arriving.
When you call any of these, ask specifically: “I have someone with heat exhaustion who is fully alert. Do you have IV hydration available right now? What is the self-pay price for a visit plus an IV?”
For a broader evaluation of which Houston urgent care centers have consistently reliable staffing and capabilities, see our comparison of which Houston urgent care centers are actually worth going to in 2026.
One more time: if the patient becomes confused at any point while you’re waiting—in the urgent care waiting room, in your car, anywhere—call 911. Not “tell the front desk.” 911.
Why the Heat Index Is the Number That Matters
At 95°F with 70% relative humidity, the heat index registers above 110°F. The National Weather Service in Houston issues Excessive Heat Warnings when the heat index is expected to reach 108°F or above for two or more hours. In July, those aren’t anomalies. They’re the baseline.
The reason humidity matters is sweat. Sweat cools the body by evaporating. In saturated air, evaporation is suppressed, the body’s primary cooling mechanism loses efficiency, and core temperature rises faster. The window between feeling overheated and being in genuine danger compresses—you feel fine, then you don’t, and there isn’t much time between those two states.
The urban heat island effect compounds this. Midtown, the Third Ward, Near Northside, and the East End run hotter than surrounding areas due to dense pavement, limited tree canopy, and less green space. Someone standing on asphalt in those neighborhoods on a 95°F afternoon is in a meaningfully hotter environment than the official temperature reading suggests.
Check heat index, not temperature. NWS Houston forecasts are at weather.gov/hgx.
Who Gets Into Trouble Fastest in Houston
Construction workers along TX-288 and the Energy Corridor are doing heavy labor in direct sun, often starting shifts when concrete is already radiating last night’s heat. Exertional heat stroke can develop fast in this population—faster than most people expect. If a co-worker suddenly becomes confused or stops responding normally during a shift, that’s a 911 call, not a water break.
Elderly residents without functional air conditioning in Acres Homes, Fifth Ward, and Sunnyside face different risk patterns. These neighborhoods have older housing stock with higher rates of AC failure, limited shade, and concentrations of older adults on fixed incomes. Heat stroke can develop slowly over hours, which makes early recognition harder. Check on elderly neighbors and relatives during any stretch of sustained heat. Houston nights in July frequently don’t drop below 80°F—the body doesn’t recover when it never gets a break.
Children left in vehicles are a distinct emergency. Texas Penal Code §22.10 makes it a criminal offense to leave a child in a vehicle in conditions that endanger their health. Houston car interiors reach dangerous temperatures within minutes on summer afternoons. If you see a child in a hot car, call 911. This is both a medical emergency and a criminal matter.
Unhoused Houstonians near downtown and along the bayou corridors have no retreat to air conditioning, often have elevated baseline health vulnerabilities, and may not be recognized as in distress until heat stroke is already advanced. Star of Hope and SEARCH Homeless Services are active referral partners during heat emergencies. If you encounter someone unresponsive or deeply confused near a bayou trail, green space, or underpass, call 911. Don’t assume they’re sleeping.
Hurricane season and heat season overlap in Houston in a way that’s easy to underestimate until you’ve lived through a bad one. Hurricane Beryl’s July 2024 landfall knocked out power across the city during peak summer heat—no AC, high humidity, a city that was already hot before the storm. The combination was genuinely dangerous for vulnerable residents, and it will happen again. Heat stroke risk rises rapidly after AC loss, particularly for elderly residents and infants. Know your nearest cooling center before the next outage. If you’re also preparing medications or medical equipment ahead of hurricane season, preparing your medications and medical needs for hurricane season in Houston is worth reviewing alongside this guide.
Cooling Centers and Cold Water in July 2026
⚠️ All location designations, hours, and emergency declaration status require publication-day verification. Call 2-1-1 or check hcphtx.org for the current confirmed list.
Call 2-1-1. Harris County operators will give you the nearest open cooling center by ZIP code or address. This is the fastest route to verified, current information. Everything else below is subject to change; 2-1-1 is updated in real time.
Houston Public Library branches—all 44 locations—function as daytime cooling sites whenever they’re open. Standard hours run roughly Monday through Thursday 9 a.m. to 8 p.m., Friday through Saturday 9 a.m. to 6 p.m., with some Sunday hours at larger branches. ⚠️ Confirm July 2026 hours and any formal heat emergency designation before publication. Branch locator at houstonlibrary.org.
Harris County Public Health designated emergency sites activate during Excessive Heat Warning declarations. ⚠️ Verify whether Mayor Whitmire has issued a heat emergency declaration for July 2026 and which HCPH sites are formally activated. Current designations at hcphtx.org.
For unhoused residents: Star of Hope provides emergency shelter and daytime services. ⚠️ Verify current locations and July 2026 operating hours directly with the organization before publication. SEARCH Homeless Services operates daytime outreach and can connect individuals to cooling resources. ⚠️ Verify current address and July 2026 services directly before publication. Both organizations work with city outreach teams during heat emergencies, with staff and volunteers actively flagging individuals in distress for welfare checks during declared emergencies.
Quick-Reference Resource Box
Screenshot or bookmark this section.
| Resource | Contact |
|---|---|
| Medical Emergency / Heat Stroke | 911 |
| Cooling Center Locations (Harris County) | 2-1-1 |
| Harris Health Financial Assistance (Ben Taub Gold Card) | 713-566-6400 (verify) |
| Houston Health Department | 832-393-4220 (verify) |
| Harris County Public Health | hcphtx.org |
| City of Houston Health | houstontx.gov/health |
| NWS Houston Heat Index Forecasts | weather.gov/hgx |
| Poison Control | 1-800-222-1222 |
| Houston Public Library (branch hours) | houstonlibrary.org |
Level I Trauma Centers:
- Ben Taub Hospital — 1504 Taub Loop, 77030
- Memorial Hermann TMC — 6411 Fannin St., 77030
- Houston Methodist TMC — 6565 Fannin St., 77030
Level II / Full ER:
- St. Joseph Medical Center — 1401 St. Joseph Pkwy., 77002
⚠️ Reporter verification checklist before publication: Confirm urgent care cash prices and IV hydration availability by calling NextCare, Memorial Urgent Care, and CommunityMed directly. Confirm July 2026 cooling center designations via HCPH and 2-1-1. Verify heat emergency declaration status under Mayor Whitmire. Confirm current Ben Taub Gold Card enrollment process with Harris Health communications. Check HFD and HCPH for any active July 2026 heat advisories. Confirm Star of Hope and SEARCH Homeless Services current addresses and July 2026 service hours. Confirm Houston Health Department main line and Harris Health Financial Assistance number remain current.
