The International Standard Atmosphere (ISA) provides a standard temperature profile with altitude. At sea level, it’s 15°C (59°F). For every 1,000 feet increase in altitude, there’s an approximate 2°C (3.6°F) temperature decrease. At 10,000 feet, it’s around -1°C (30.2°F), and at 20,000 feet, it’s around -31°C (-23.8°F). These values serve as reference points for aviation and meteorology.
Temperature vs. Altitude Calculator
Estimated Temperature Change: – °C
Here’s a table that provides International Standard Atmosphere (ISA) temperatures at various altitudes:
| Altitude (Feet) | Altitude (Meters) | ISA Temperature (°C) | ISA Temperature (°F) |
|---|---|---|---|
| Sea Level | 0 | 15.0 | 59.0 |
| 1,000 | 305 | 13.0 | 55.4 |
| 2,000 | 610 | 11.0 | 51.8 |
| 3,000 | 914 | 9.0 | 48.2 |
| 4,000 | 1,219 | 7.0 | 44.6 |
| 5,000 | 1,524 | 5.0 | 41.0 |
| 10,000 | 3,048 | -1.0 | 30.2 |
| 20,000 | 6,096 | -31.0 | -23.8 |
| 30,000 | 9,144 | -51.0 | -59.8 |
| 40,000 | 12,192 | -71.0 | -95.8 |
Please note that these values are approximate and represent standard atmospheric conditions according to the ISA model. Actual atmospheric conditions can vary due to factors such as weather and location.
FAQs
How do you find the temperature of altitude using ISA? The International Standard Atmosphere (ISA) provides a standard temperature profile with altitude. You can find the temperature at a specific altitude using ISA by referring to the standard atmospheric tables or using the lapse rate formula. The lapse rate is approximately 2°C (3.6°F) decrease per 1,000 feet (305 meters) of altitude.
What is the ISA temp at 7000 ft? At 7,000 feet, the estimated temperature deviation from ISA is around -14°C (-25°F). So, the ISA temperature at 7,000 feet would be approximately -17°C (1.4°F).
How do you calculate temperature change with altitude? To calculate temperature change with altitude, you can use the lapse rate formula: Temperature (T) at a given altitude (h) = ISA temperature at sea level (T0) – (lapse rate x h)
What is the ISA temp at 20,000 ft? At 20,000 feet, the estimated temperature deviation from ISA is around -47°C (-85°F). So, the ISA temperature at 20,000 feet would be approximately -31°C (-24°F).
What is the temperature at 10,000 feet in ISA? The ISA temperature at 10,000 feet is approximately -50°C (-58°F).
What is an ISA temperature? An ISA temperature is the temperature profile defined by the International Standard Atmosphere (ISA), which provides a standard reference for atmospheric conditions at various altitudes. It is used in aviation and meteorology as a reference for calculations.
What is the temperature difference per 1,000 feet of elevation? The temperature difference per 1,000 feet of elevation is approximately 2°C (3.6°F) decrease in temperature.
How much colder is it at 4,000 feet? At 4,000 feet, the estimated temperature deviation from ISA is around -9°C (-16°F). So, it’s about 9°C (16°F) colder than the ISA standard temperature at that altitude.
What is the temperature change per 1,000 feet? The temperature change per 1,000 feet is approximately 2°C (3.6°F) decrease in temperature.
What is the temperature at 50 km altitude? At 50 km (31 miles) altitude, the temperature is extremely low, estimated to be around -50°C (-58°F).
What is the temperature at 12 km altitude? At 12 km (39,370 feet) altitude, the temperature is approximately -50°C (-58°F).
What is the temperature at 10 km above Earth? At 10 km above Earth’s surface, the temperature is approximately -50°C (-58°F).
How do I calculate ISA? ISA is calculated using a standard atmospheric model that defines temperature, pressure, and other atmospheric properties as functions of altitude. It follows a lapse rate of approximately 2°C (3.6°F) per 1,000 feet up to a certain altitude.
How is the ISA calculated in aviation? In aviation, ISA is used as a reference for flight planning and performance calculations. It is calculated based on the standard atmospheric model, which includes standard temperature, pressure, and density profiles with altitude.
What is the temperature in comparison to ISA conditions at 30,000 ft? At 30,000 feet, the estimated temperature deviation from ISA is around -39°C (-70°F). So, it’s about 39°C (70°F) colder than the ISA standard temperature at that altitude.
How do you calculate temperature deviation from ISA? To calculate temperature deviation from ISA at a specific altitude, subtract the ISA temperature at that altitude from the actual observed temperature.
What temperature is ISA 15? ISA 15 typically refers to the International Standard Atmosphere conditions at 15,000 feet. The temperature at ISA 15,000 feet is approximately -48°C (-54.4°F).
What is the difference between OAT and ISA? OAT (Outside Air Temperature) is the actual air temperature outside the aircraft, while ISA (International Standard Atmosphere) is a standardized reference temperature profile based on altitude. The difference between OAT and ISA indicates the temperature deviation from the standard atmospheric conditions at a given altitude.
What are the rules with an ISA? ISA (International Standard Atmosphere) is not a set of rules but a standard reference for atmospheric conditions at various altitudes. It is used primarily in aviation and meteorology for calculations and reference.
Can you touch an ISA? ISA (International Standard Atmosphere) is a reference for atmospheric conditions and not a physical object, so you cannot touch it.
How long should you hold an ISA? ISA does not refer to something you hold. It is a reference standard for atmospheric conditions.
How cold is it at 13,000 feet below sea level? At 13,000 feet below sea level, the temperature would be extremely high, estimated to be around 300°C (572°F) or more, depending on factors like geothermal heat.
How much does temperature drop with height? Temperature generally decreases with increasing altitude due to the lapse rate, which is about 2°C (3.6°F) per 1,000 feet.
How cold is it at 15,000 feet? At 15,000 feet, the estimated temperature deviation from ISA is around -55°C (-67°F). So, it’s approximately -39°C (-38.2°F).
How cold is the air at 35,000 feet? At 35,000 feet, the estimated temperature deviation from ISA is around -56°C (-68°F). So, it’s approximately -40°C (-40°F).
How cold is it at 12,000 feet underwater? At 12,000 feet underwater, the temperature would be very close to freezing, around 0°C (32°F), assuming typical ocean depths and conditions.
At what altitude is the coldest air? The coldest air is typically found at high altitudes in the Earth’s upper atmosphere, such as the mesosphere and thermosphere. Temperatures in these regions can drop to extremely low levels, hundreds of degrees below freezing.
How many degrees Celsius do you lose per 1,000 feet? You lose approximately 2°C (3.6°F) per 1,000 feet of elevation gain.
How cold is it at 30,000 feet? At 30,000 feet, the estimated temperature deviation from ISA is around -39°C (-70°F). So, it’s about -33°C (-28.4°F).
How far from Earth does space begin? The boundary of space is commonly considered to begin at the Kármán line, which is located approximately 100 kilometers (62 miles) above sea level.
How many degrees drop is there for every 100 meters in altitude? For every 100 meters (328 feet) in altitude gain, you can estimate a temperature drop of roughly 0.2°C (0.36°F).
What is the temperature at 30 km altitude? At 30 km (approximately 18.6 miles) altitude, the temperature is extremely low, estimated to be around -50°C (-58°F).
What is the temperature 10 km below Earth? The temperature 10 km below the Earth’s surface would be extremely high, likely in the range of thousands of degrees Celsius, due to the Earth’s molten core.
What is the temperature at 100 km below the surface? At 100 km below the Earth’s surface, temperatures would be extremely high, likely in the range of several thousand degrees Celsius, due to the intense heat of the Earth’s mantle and core.
What will the temperature be of still air at 1,000 meters altitude? The temperature of still air at 1,000 meters (1 kilometer) altitude would depend on local conditions but might be close to the surface temperature at that location.
What is the temperature 20 feet underground? The temperature 20 feet underground can vary greatly depending on location and depth but is typically cooler than the surface temperature. It may be in the range of a few degrees Celsius cooler than the surface temperature.
What is the temperature 100 miles above the Earth? At 100 miles (160.9 kilometers) above the Earth’s surface, also known as the Kármán line, the temperature would be extremely low, close to the vacuum of space, and would depend on the local conditions but could be around -100°C (-148°F) or colder.
How hot is the Earth at 3,000 km deep? At a depth of 3,000 kilometers (approximately 1,864 miles) below the Earth’s surface, temperatures would be extremely high, likely in the range of thousands of degrees Celsius, due to the intense heat of the Earth’s mantle and core.
What is the 4% rule in ISA? The 4% rule in finance is unrelated to ISA (International Standard Atmosphere). It’s a rule of thumb used for retirement planning and states that you can safely withdraw 4% of your retirement savings annually without depleting your savings too quickly.
What is the effect of ISA deviation on true altitude? The deviation from ISA conditions can affect true altitude calculations in aviation. When flying in non-standard temperature conditions, the aircraft’s true altitude may differ from indicated altitude. Pilots must make corrections to account for this deviation.
What is the ISA temperature at FL350? At Flight Level 350 (approximately 35,000 feet), the ISA temperature deviation is approximately -56°C (-68°F). So, it’s about -40°C (-40°F).
What is the ISA deviation with altitude? The ISA deviation with altitude refers to the change in temperature and atmospheric conditions from the standard ISA profile as you ascend or descend in altitude.
What percentage is an ISA? ISA (International Standard Atmosphere) is not expressed as a percentage; it’s a standardized atmospheric model that provides temperature, pressure, and density profiles as functions of altitude.
What is ISA 15 in aviation? ISA 15 typically refers to the International Standard Atmosphere conditions at 15,000 feet, which includes specific temperature, pressure, and density values for that altitude according to the standard atmospheric model.
What is the temperature of the ISA altitude? The temperature at any given ISA altitude is determined by the International Standard Atmosphere model, which provides specific temperature values for each altitude level. These values can be found in ISA tables or calculated using the standard lapse rate.
What is the ISA temp at 7,000 ft? At 7,000 feet, the estimated temperature deviation from ISA is around -14°C (-25°F). So, the ISA temperature at 7,000 feet would be approximately -17°C (1.4°F).
How do you calculate temperature at different altitudes? You can calculate the temperature at different altitudes using the lapse rate formula: Temperature (T) at a given altitude (h) = ISA temperature at sea level (T0) – (lapse rate x h)
What is the average temperature of ISA? The average temperature of the ISA (International Standard Atmosphere) varies with altitude, but it starts at 15°C (59°F) at sea level and decreases with increasing altitude.
What is the temperature deviation with altitude? The temperature deviation with altitude refers to how the actual atmospheric temperature differs from the temperature specified in the ISA model as you ascend or descend in altitude.
What is the formula for temperature variation? The formula for temperature variation with altitude in the standard atmosphere (ISA) is: Temperature (T) at a given altitude (h) = ISA temperature at sea level (T0) – (lapse rate x h)
What is the ISA temperature at 10,000 feet? The ISA temperature at 10,000 feet is approximately -50°C (-58°F).
What does ISA mean on NAV log? In aviation, “ISA” on a navigation log typically refers to the International Standard Atmosphere, and it may be used to calculate and plan for altitude and performance data during a flight.
What is the temperature at 35,000 ft? At 35,000 feet, the estimated temperature deviation from ISA is around -56°C (-68°F). So, it’s approximately -40°C (-40°F).
What is the healthiest oat form? The healthiest oat form depends on individual preferences and dietary needs. Rolled oats, steel-cut oats, and old-fashioned oats are all nutritious choices, offering different textures and cooking times.
What is oat in the UK? In the UK, “oat” typically refers to oats or oat grains, which are commonly used to make oatmeal, porridge, and various oat-based products.
Does oat quality matter? Yes, the quality of oats can impact their taste, texture, and nutritional value. Higher-quality oats are typically less processed and may retain more nutrients and flavor.
What is the 30-day ISA rule? The 30-day ISA rule is not related to International Standard Atmosphere (ISA). It may refer to financial rules or regulations associated with Individual Savings Accounts (ISAs) in some countries.
What are the 4 different types of ISAs? The four main types of ISAs (Individual Savings Accounts) in the UK are Cash ISAs, Stocks and Shares ISAs, Innovative Finance ISAs, and Lifetime ISAs. Each type has its own features and eligibility criteria.
What cannot be held in an ISA? The specific assets or investments that cannot be held in an ISA may vary by country and by the type of ISA. Generally, prohibited assets might include certain high-risk investments or assets not eligible for tax-free savings.
Can an ISA be transferred on death? In some cases, ISAs may be transferred on death, depending on the rules and regulations of the specific ISA provider and the country’s tax laws.
Can I close my ISA and open another? Yes, you can close an ISA and open another one, but there may be rules and limits on how and when you can do so. It’s advisable to check with your financial institution or tax authority for guidance.
What happens if you oversubscribe to an ISA? Oversubscribing to an ISA (contributing more than the annual limit) can result in tax penalties or loss of tax benefits. It’s important to stay within the prescribed contribution limits.
Should I max out my ISA every year? Whether you should max out your ISA every year depends on your financial goals, circumstances, and other investments. It’s a decision best made in consultation with a financial advisor.
Is there a cooling-off period for an ISA? There is typically no cooling-off period for ISAs. Once you’ve opened an ISA and made contributions, they are subject to the rules and restrictions of that particular ISA.
How cold is it 2 miles underwater? At a depth of 2 miles (about 3,218 meters) underwater, the temperature is relatively stable and would be close to the average deep ocean temperature, which is around 2-4°C (36-39°F).
How cold is it 1,000 feet underwater? At a depth of 1,000 feet (about 305 meters) underwater, the temperature would be cooler than at the surface, but it would still be relatively mild compared to deeper ocean depths, likely around 10-12°C (50-54°F).
How much does the temperature drop with altitude in the UK? The temperature drop with altitude in the UK follows the same lapse rate as elsewhere, which is approximately 2°C (3.6°F) per 1,000 feet of altitude gain.
What is the average change in temperature with height? The average change in temperature with height is about 2°C (3.6°F) decrease per 1,000 feet of elevation gain.
How many degrees is 1,000 feet colder? 1,000 feet of elevation gain is typically associated with a temperature drop of approximately 2°C (3.6°F) colder.
How cold is it at 30,000 feet? At 30,000 feet, the estimated temperature deviation from ISA is around -39°C (-70°F). So, it’s about -33°C (-28.4°F).
Why don’t commercial planes fly at 40,000 feet? Commercial planes typically fly at altitudes between 30,000 and 40,000 feet, depending on factors like aircraft type, weight, and the route. Altitudes around 35,000 feet are common because they provide a balance between fuel efficiency and passenger comfort.
How cold is it at 13,000 feet below sea level? At 13,000 feet below sea level, the temperature would be extremely high, likely exceeding hundreds of degrees Celsius due to the Earth’s geothermal heat.
How cold is the ocean at 3,000 feet? The temperature of the ocean at 3,000 feet (about 914 meters) can vary depending on location, but it is generally cool, typically ranging from 2°C to 5°C (36°F to 41°F).
How much colder is it at 14,000 feet? At 14,000 feet, the estimated temperature deviation from ISA is around -26°C (-47°F). So, it’s approximately -10°C (14°F) colder than ISA standard conditions.
What is the coldest temperature ever recorded in the UK? The coldest temperature ever recorded in the UK was -27.2°C (-17°F) in Braemar, Scotland, on January 10, 1982.
Is high altitude always cold? High altitudes are generally colder than lower altitudes, but the specific temperature at any given altitude can vary depending on factors like location, time of year, and weather patterns.
How much does temperature drop every 1,000 feet in elevation? Temperature typically drops by approximately 2°C (3.6°F) for every 1,000 feet of elevation gain.
What is the temperature drop of 2 degrees for every 1,000 feet? A temperature drop of 2 degrees Fahrenheit (2°F) for every 1,000 feet of elevation gain is a rough approximation of the lapse rate in the lower atmosphere.
Why do planes fly at 37,000 feet? Planes fly at altitudes like 37,000 feet because it offers a balance between fuel efficiency, passenger comfort, and safety. This altitude minimizes air resistance while maintaining cabin pressure suitable for passengers.
How cold is too cold for planes to take off? Planes are designed to operate in a wide range of temperatures. Extreme cold, below -40°C (-40°F), can pose challenges, but modern aircraft are equipped to handle these conditions.
Is 1 day in space 7 years on Earth? The idea that 1 day in space is equivalent to 7 years on Earth is a misunderstanding of the effects of time dilation due to general relativity. In practical terms, time dilation for astronauts in space is minimal and not noticeable on the scale of days.
How many years on Earth is 1 hour in space? The time dilation experienced by astronauts in space is very small. For example, spending 1 hour in space might result in a time difference of a fraction of a second compared to Earth due to the effects of general relativity.
How cold can it get in space? In the vacuum of space, there is no atmosphere to conduct heat, so temperatures can vary dramatically. In direct sunlight, it can get extremely hot, while in the shade or darkness, temperatures can drop to hundreds of degrees below freezing.
What is the temperature at 100 km below the surface? At 100 km below the Earth’s surface, temperatures would be extremely high, likely in the range of thousands of degrees Celsius, due to the intense heat of the Earth’s mantle and core.
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