The title of “hottest place on Earth” sounds like it belongs to one spot, but the answer depends on how you measure heat. Death Valley’s Furnace Creek holds the official world record for highest air temperature at 56.7°C (134°F) — a benchmark validated by the U.S. National Park Service (official climate records).
Highest recorded air temperature: 56.7°C (134°F) at Furnace Creek, Death Valley (1913) · Hottest inhabited place (average): Dallol, Ethiopia — 34.4°C (94°F) average yearly temperature · Highest land surface temperature: 70.7°C (159°F) recorded in Lut Desert, Iran (2005) · Human wet-bulb survivability limit: 35°C (95°F) – beyond this, core temperature can’t be cooled · Projected global temperature rise by 3000: 3–10°C under high emissions scenarios
Quick snapshot
- Furnace Creek, Death Valley (U.S. National Park Service)
- 56.7°C (134°F) on July 10, 1913 (NASA Earth Observatory)
- Validated by WMO (CBS News)
- Dallol, Ethiopia (NASA Earth Observatory)
- 34.4°C (94°F) average yearly (NASA Earth Observatory)
- Extreme daily highs often exceed 45°C (NASA Earth Observatory)
- Lut Desert, Iran (NASA Earth Observatory)
- 70.7°C (159°F) in 2005 (NASA Earth Observatory)
- Measured by NASA satellite (NASA Earth Observatory)
- Tropics and Middle East (NASA Earth Observatory)
- May exceed wet-bulb limit by 2100 (NASA Earth Observatory)
- Human habitability threatened (NASA Earth Observatory)
Five numbers that define Earth’s heat extremes: one record each for air, surface, habitat, human limits, and future risk.
| Metric | Value | Location | Source |
|---|---|---|---|
| Highest recorded air temperature | 56.7°C (134°F) in 1913 | Furnace Creek, Death Valley | U.S. National Park Service |
| Hottest inhabited place (average) | 34.4°C (94°F) yearly average | Dallol, Ethiopia | NASA Earth Observatory |
| Highest land surface temperature | 70.7°C (159°F) in 2005 | Lut Desert, Iran | NASA Earth Observatory |
| Human wet-bulb survivability limit | 35°C (95°F) | Physiological threshold | PubMed Central (heat-health research) |
| Projected global temperature rise by 3000 | 3–10°C under high emissions | Global (climate models) | NASA Earth Observatory |
Where is the hottest place on Earth now?
Current highest air temperature record holder
- Death Valley’s Furnace Creek recorded 56.7°C (134°F) on July 10, 1913 — the highest official air temperature ever measured, according to the U.S. National Park Service (official climate records).
- The World Meteorological Organization confirmed the record as valid, rejecting a 1922 reading from El Azizia, Libya that had briefly claimed the title (NASA Earth Observatory).
Hottest place based on satellite surface temperature data
- NASA’s MODIS instrument measured a land surface temperature of 70.7°C (159.3°F) in Iran’s Lut Desert in 2005 — more than 12°C hotter than the Death Valley air record (NASA Earth Observatory).
- A 2021 study in CBS News identified two spots that briefly surpassed Death Valley’s air temperature, but neither has been officially verified by the WMO.
What are the top 10 hottest places on Earth?
Hottest cities
- Kuwait City, Baghdad, and Ahvaz routinely see summer highs above 50°C (122°F). In July 2024, multiple Middle Eastern cities reported consecutive days above that mark (CBS News).
- Furnace Creek (Death Valley) is the hottest single location, but it is uninhabited year-round.
Hottest countries
- Mali, Burkina Faso, and other Sahel countries have the highest national average temperatures, often exceeding 28°C (82°F) annually. The combination of latitude and low vegetation drives this.
Uninhabited vs inhabited hottest zones
- Uninhabited: Lut Desert and Death Valley compete for peak extremes.
- Inhabited: Dallol, Ethiopia, with an average annual temperature of 34.4°C (94°F), is the hottest permanently inhabited place on Earth (NASA Earth Observatory).
Four locations, four different heat metrics: a comparison that shows why “hottest” needs a qualifier.
| Location | Category | Key Record | Source |
|---|---|---|---|
| Death Valley (Furnace Creek) | Official air temperature | 56.7°C (134°F) | U.S. National Park Service |
| Lut Desert, Iran | Land surface temperature | 70.7°C (159°F) | NASA Earth Observatory |
| Dallol, Ethiopia | Annual average temperature (inhabited) | 34.4°C (94°F) | NASA Earth Observatory |
| Kuwait City | Urban summer peak | Regularly >50°C | CBS News |
The implication: No single location wears all crowns. The “hottest” label depends entirely on whether you measure air, surface, average, or extreme peaks — and whether people actually live there.
What temperature is too hot for humans?
Surviving 40°C (104°F)
- With hydration and access to shade, a healthy adult can survive 40°C for hours. But heat exhaustion sets in quickly during exertion (PubMed Central (heat-health research)).
Surviving 90°F (32°C)
- 90°F is manageable in dry air, but humidity changes everything. The National Weather Service uses a 90–105°F heat index range as “extreme caution” (PubMed Central).
Surviving 140°F (60°C)
- Air at 140°F (60°C) is rapidly fatal. The human body gains heat faster than it can shed it; core temperature rises uncontrollably (PubMed Central).
The wet-bulb temperature limit of 35°C
- Wet-bulb temperature combines heat and humidity. Above 35°C wet-bulb (95°F), sweating stops working and core body temperature can no longer be regulated. Even fit people in shade die within hours (PubMed Central (heat-physiology synthesis)).
A dry 50°C day is survivable with water and rest. A humid 38°C day at 80% humidity can be lethal. Wet-bulb, not dry temperature, is the real killer.
How hot will Earth be in 3000?
Climate change projections
- Under high emissions (RCP8.5), global average temperature could rise 3–10°C by the year 3000 (NASA Earth Observatory).
RCP scenarios and uncertainty
- The exact magnitude depends on feedback loops: sea ice loss reduces albedo, permafrost thaws releasing methane, and water vapor increases as the atmosphere warms.
Potential uninhabitable regions
- Many tropical and subtropical regions may regularly exceed the 35°C wet-bulb safety limit. The Middle East, parts of India, and the Sahel could become uninhabitable for parts of the year (CBS News).
The same regions that are already the hottest on Earth will see the most extreme increases. For places like the Lut Desert, the margin between “extreme” and “uninhabitable” may shrink to zero.
What is the hottest place on Earth all year-round?
Dallol, Ethiopia
- Dallol holds the record for highest average annual temperature: 34.4°C (94°F). Its extreme daily highs often exceed 45°C (NASA Earth Observatory).
Lut Desert, Iran
- The Lut Desert recorded the highest land surface temperature in 2005 at 70.7°C (159°F). It also holds the record for the hottest surface in five of seven years studied (NASA Earth Observatory).
Death Valley seasonal patterns
- Death Valley has the highest recorded air temperature but not the highest average. Its summer lows often remain above 90°F (32°C) (U.S. National Park Service).
The pattern: The year-round hottest spot is inhabited (Dallol), but the most extreme instantaneous heat belongs to uninhabited deserts.
Is the equator the hottest place on Earth?
Why the equator isn’t the hottest
- Equatorial regions receive intense solar radiation, but heavy cloud cover and frequent rain moderate temperatures. The hottest spots are in subtropical deserts around 20–40° latitude (NASA Earth Observatory).
Role of humidity and cloud cover
- High humidity at the equator limits how hot the air can get. Evaporative cooling from rain also suppresses extremes.
Subtropical deserts are hotter
- Death Valley (36°N) and the Lut Desert (30°N) are far from the equator. Dry air, clear skies, and low vegetation allow temperatures to soar higher than anywhere on the equator (U.S. National Park Service).
The equator feels hot because it’s always warm and humid, but the thermometer rarely hits the extreme highs of subtropical deserts. The “hottest” label is not about latitude alone — it’s about dryness, elevation, and geography.
Timeline of extreme heat milestones
- — Furnace Creek, Death Valley records 56.7°C (134°F) — highest official air temperature (U.S. National Park Service).
- — NASA satellite detects 69.3°C (157°F) in Queensland, Australia (NASA Earth Observatory).
- — Lut Desert landsurface measured at 70.7°C (159°F) by MODIS instrument (NASA Earth Observatory).
- — Science.org publishes study identifying two spots that briefly exceeded Death Valley’s air temp (CBS News).
- — Middle East records multiple days above 50°C; India reports heatwave deaths (CBS News).
- — Global temperatures may rise 3–10°C under high emissions; large areas become uninhabitable (NASA Earth Observatory).
Confirmed facts vs. what remains unclear
Confirmed facts
- Death Valley holds the world record for highest official air temperature (56.7°C, 1913) (U.S. National Park Service).
- Dallol, Ethiopia is the hottest inhabited place by annual average temperature (NASA Earth Observatory).
- Wet-bulb temperature above 35°C is lethal for humans without artificial cooling (PubMed Central).
What’s unclear
- Whether any other location has officially exceeded 56.7°C air temperature (pending WMO verification) (CBS News).
- Exact magnitude of future warming by 3000 depends on emission scenarios and feedback loops (NASA Earth Observatory).
- Whether satellite temperature readings can be directly compared to air temperature records.
Expert perspectives
“Move over, Death Valley: These are the two hottest spots on Earth.” For more details on the hottest places on Earth, check out Het weer in Monster vandaag.
— 2021 study published in CBS News (reporting on Science.org findings)
“The Lut Desert had the highest land-surface temperature on Earth in five of seven years in a satellite analysis.”
— NASA Earth Observatory (satellite climate research)
“Death Valley is famous as the hottest place on Earth and holds the world record highest air temperature.”
— U.S. National Park Service (Death Valley official site)
For policymakers in tropical regions, the choice is clear: invest in heat-resilient infrastructure now, or face conditions by the end of this century that no human can survive without artificial cooling.
Related coverage: record 56.7°C in Death Valley fördjupar bilden av Hottest Temperature Ever Recorded – 56.7°C in Death Valley 1913.
Frequently asked questions
How does the heat index affect human survival in extreme heat?
The heat index combines temperature and humidity. A high heat index means the body cannot cool itself effectively. At 90°F (32°C) with 80% humidity, heat stroke risk rises sharply.
What is the hottest temperature a human can survive?
The highest survivable air temperature depends on humidity and duration. In dry air, a person can survive 50°C (122°F) for short periods with water and shade. Above 60°C (140°F), death occurs within minutes.
Are there places on Earth where humans cannot survive due to heat alone?
Yes. The Lut Desert and parts of Death Valley exceed the wet-bulb limit seasonally, making them lethal for humans without protective gear. By 2100, many tropical cities may cross this threshold regularly.
What causes Death Valley to be so hot?
Death Valley’s low elevation (86m below sea level), clear skies, sparse vegetation, and surrounding mountains that trap hot air create its extreme heat (U.S. National Park Service).
How is climate change affecting the frequency of extreme heat records?
Climate change increases the frequency and intensity of heatwaves. Death Valley has seen more days above 50°C in recent decades, and record-breaking heat events are becoming more common globally (CBS News).
What is the difference between air temperature and land surface temperature when measuring heat?
Air temperature is measured at 1.5m above ground, while land surface temperature (LST) is measured by satellite on the ground itself. LST can be 20–30°C hotter, as seen in the Lut Desert (70.7°C LST vs 50°C air) (NASA Earth Observatory).
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Oscar Friel covers culture, lifestyle, society and long-form features across the UK.