Seriously. Does Houston have to be this damn hot?
Yes, Houston is naturally hot. Yes, we live in a humid Gulf Coast climate. And yes, global warming is making the baseline hotter. But let’s stop fronting like every degree of Houston’s “hotter than hell’s fish grease” temperatures is simply “Mother Nature doing her thing.”
A whole lot of this heat is man-made.
We pave over land, remove trees to make space for strip malls, build parking lots on top of parking lots, widen roads, concentrate buildings, encourage automobile dependence, and allow industrial pollution to become part of the landscape. Then we act surprised when the city literally cooks.
The U.S. Environmental Protection Agency says urban heat islands can make cities one to seven degrees hotter during the day than surrounding areas. Roads, buildings, parking lots, and other hard surfaces absorb and re-release solar heat, while trees and vegetation cool the environment.
Houston provides Exhibit A.
Paved into a heat corner
In 2020, Houston and Harris County conducted one of the nation’s largest urban heat-mapping efforts. Researchers recorded a 17.1-degree difference between the hottest and coolest locations during the same afternoon.
The hottest spot reached 103.3 degrees. The coolest measured 86.2.
That’s not a minor weather variation. That’s a completely different human, animal, and vegetation experience depending on where you live. And much of the difference comes down to what we built—or failed to build. In other words, human decisions and actions.
More pavement. Less vegetation. More cars. Fewer trees. More buildings radiate stored heat.
Houston’s Gulfton neighborhood, identified as the city’s hottest neighborhood in the 2020 mapping, was 17 degrees hotter than the coolest area measured. Parts of Gulfton have had only about 4% tree shade, compared with dramatically higher canopy levels in wealthier (read: white) communities.
So, when somebody says, “Houston is just hot,” that’s only half the story. Houston is hot. But some Houstonians are being cooked more than others.
Racism has a temperature
This is where the conversation gets uncomfortable for those enjoying the most shade and lowest temperatures. Historic redlining and racial segregation didn’t just determine who could buy houses where. They helped determine who received trees, parks, green infrastructure, and other neighborhood investments that have been shown to reduce the more intense aspects of high temperatures.
A national study of 37 metropolitan areas found that neighborhoods historically graded “D”—areas that were disproportionately home to racial and ethnic minorities—have about 23% tree canopy today, compared with nearly 43% in historically “A”-graded neighborhoods. That “D” grade stands for “Damn!”
Houston shows the same pattern. A recent analysis found a 16-percentage-point difference in tree canopy between predominantly white communities and communities with larger populations of Black and Brown folk. In affluent River Oaks, canopy coverage reaches roughly 44%; around Burnett Bayland Park in working-class Gulfton, it’s about 20%, with some areas even lower.
Ironically, the planet’s Black and Brown inhabitants have known since ancient times that trees aren’t decorative accessories but rather critical infrastructure for keeping everyone involved healthy and comfortable.
Case in point, the EPA says shade can make surfaces 20 to 45 degrees cooler than unshaded materials. That means a tree can be the difference between a sidewalk being merely hot and being damn-near hostile to human life.
And Black communities have historically been among those most likely to live in neighborhoods shaped by disinvestment, fewer trees, and more heat-absorbing surfaces. CDC research notes that racial differences in heat-related mortality are connected to social vulnerability, less green space, greater exposure to heat-absorbing surfaces, and unequal access to resources such as air conditioning.
Racism is literally burning us alive.
The fossil-fuel elephant in the room
We also have to talk about cars and industry. Houston’s dependence on personal vehicles means millions of engines burning fuel daily. The region’s petrochemical and industrial economy adds another layer of emissions.
And Houston still struggles with ozone pollution. In 2024, the EPA reclassified the Houston-Galveston-Brazoria area from “moderate” to “serious” nonattainment under the federal ozone standard, requiring stronger emission-control strategies.
One scientific clarification matters: Ground-level ozone is not the protective ozone layer in the stratosphere. Houston’s pollution doesn’t simply “burn a hole” in the ozone layer. Instead, heat and sunlight help create ground-level ozone from nitrogen oxides and volatile organic compounds, worsening respiratory health.
Meanwhile, greenhouse gas emissions are warming the planet, while the fossil-fuel industry continues to “discredit” the science so they can avoid regulations and maximize profits.
Translation: When the science threatens profits, employ corporate lobbyists, misinformation, and dark money to boo-boo on the science.
And the consequences aren’t theoretical.
Heat can kill you
The CDC says more than 700 Americans die from extreme heat each year, while heat can worsen cardiovascular, respiratory, and kidney disease and other conditions.
And dig this: Heat doesn’t care whether you believe in climate change. Your heart doesn’t care about your political party. Your kidneys don’t care who you voted for. And your body definitely doesn’t care whether somebody on television called global warming a hoax.
The people most exposed often have the fewest resources to escape it—older adults, outdoor workers, people with chronic illnesses, children, and residents of low-income neighborhoods. That makes extreme heat not simply a weather issue, but a public policy problem.
So, what can we do?
First, citizens need to demand that city, county, and state officials treat trees, shade, and green space as essential infrastructure—not beautification projects.
Plant more trees, especially in historically underserved neighborhoods. Protect mature trees. Require shade in large parking lots. Expand parks. Build shaded sidewalks and bus stops. Replace unnecessary pavement with permeable, vegetated surfaces.
Second, stop designing Houston exclusively around cars. More reliable public transportation, safer walking and biking infrastructure, and smarter development can reduce both emissions and the amount of heat-producing pavement.
Third, hold industrial polluters accountable. Demand cleaner air, stronger enforcement, and transparent emissions reporting.
Fourth, vote like your health depends on it—because it does. Ask candidates a simple question: What’s your plan for making our neighborhoods cooler, cleaner, and safer?
And individually, don’t play with extreme heat. Hydrate. Wear lightweight clothing. Seek shade. Schedule outdoor work and exercise during cooler hours. Check on elderly neighbors and people living alone. Use air conditioning when possible. Know the symptoms of heat exhaustion and heat stroke. And check the air-quality forecast before spending hours outside.
We Houstonians can’t control every degree the planet gains. But we can control whether we keep pouring concrete, removing trees, subsidizing pollution, and designing communities that trap heat.
The future is going to be hotter. The question is whether we’re foolish enough to make it hotter than it has to be. Because a city that can build a $2 billion freeway interchange can damn sure plant some trees.
