FAA Part 107 weather practice questions
20 free practice questions from FAA-G-8082-22. Each answer is explained and linked to the rule it comes from.
Part 107 Weather
20 questions across 8 topics. After each answer you see why it is right, with a link to the official source.
Tip: press A, B, C or D to answer and Enter for the next question. Nothing you answer leaves your browser.
Review all 20 questions
Prefer to read? Here is every question in the Part 107 Weather set, grouped by topic. Open a question to see the answer, why it is right and the official source.
Weather sources and reports
1. Which two automated systems does the FAA Remote Pilot Study Guide name as playing a major role in gathering surface aviation weather observations?
- A. PIREP and SIGMET
- B. AWOS and ASOS
- C. TAF and FB
- D. AIRMET and FA
Show answer
Answer: B. AWOS and ASOS
The Study Guide says "Automated weather sources, such as the Automated Weather Observing Systems (AWOS), Automated Surface Observing Systems (ASOS), as well as other automated facilities, also play a major role in the gathering of surface observations."
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
2. Which two products does the Study Guide group together as inflight weather advisories?
- A. METAR and PIREP
- B. TAF and FB
- C. ASOS and AWOS
- D. Significant Meteorological Information (SIGMET) and Airman's Meteorological Information (AIRMET)
Show answer
Answer: D. Significant Meteorological Information (SIGMET) and Airman's Meteorological Information (AIRMET)
The Study Guide lists the forecasts pilots need to know, including "inflight weather advisories (Significant Meteorological Information (SIGMET), Airman’s Meteorological Information (AIRMET))".
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
METAR and TAF codes
3. According to the Study Guide, what does the modifier AUTO in a METAR denote?
- A. The report came from an automated source
- B. The report corrects an earlier report that contained an error
- C. The report is a special report issued between routine reports
- D. The wind direction is variable
Show answer
Answer: A. The report came from an automated source
The Study Guide says "If the notation “AUTO” is listed in the METAR/SPECI, the report came from an automated source." A corrected report is marked COR instead.
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
4. In a METAR wind group, what does the Study Guide say follows the wind speed when the winds are gusting?
- A. The letters VRB
- B. A separate group of numbers separated by a V
- C. The letter G, followed by the peak gust recorded
- D. The letters RMK
Show answer
Answer: C. The letter G, followed by the peak gust recorded
The Study Guide says that when winds are gusting the letter G "follows the wind speed (G26KT)", and that after the G "the peak gust recorded is provided."
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
5. How does the Study Guide say the altimeter setting is reported in a METAR?
- A. In inches of mercury, as a four-digit group always preceded by the letter A
- B. In millibars, as a three-digit group preceded by the letter Q
- C. In hundreds of feet AGL, as a three-digit group
- D. In degrees Celsius, preceded by the letter M
Show answer
Answer: A. In inches of mercury, as a four-digit group always preceded by the letter A
The Study Guide: the altimeter setting is "reported as inches of mercury" "in a four-digit number group (A2970)", and "It is always preceded by the letter" A.
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
6. According to the Study Guide, which two types of report can a TAF be?
- A. A surface observation or a pilot report
- B. A routine forecast (TAF) or an amended forecast (TAF AMD)
- C. A special report (SPECI) or a corrected report (COR)
- D. A convective forecast or a winds aloft forecast
Show answer
Answer: B. A routine forecast (TAF) or an amended forecast (TAF AMD)
The Study Guide: "Type of report—a TAF can be either a routine forecast (TAF) or an amended forecast (TAF AMD)."
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
7. According to the Study Guide, how often is a TAF updated?
- A. Every hour, on the hour
- B. Twice a day, at 0000Z and 1200Z
- C. Once a day, at 1200Z
- D. Four times a day, at 0000Z, 0600Z, 1200Z, and 1800Z
Show answer
Answer: D. Four times a day, at 0000Z, 0600Z, 1200Z, and 1800Z
The Study Guide: "Each TAF is valid for a 24 or 30-hour time period and is updated four times a day at 0000Z, 0600Z, 1200Z, and 1800Z."
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
Density altitude and performance
8. According to the Study Guide, how is air density related to pressure when the temperature is constant?
- A. Density varies inversely with pressure
- B. Density does not change with pressure
- C. Density is directly proportional to pressure
- D. Density depends on pressure only above 18,000 feet MSL
Show answer
Answer: C. Density is directly proportional to pressure
The Study Guide: "density is directly proportional to pressure. If the pressure is doubled, the density is doubled", and "This statement is true only at a constant temperature."
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
9. According to the Study Guide, how does the density of air vary with temperature when the pressure is constant?
- A. Directly: increasing the temperature increases the density
- B. It does not vary with temperature
- C. Inversely: increasing the temperature decreases the density
- D. Inversely, but only above 12,000 feet
Show answer
Answer: C. Inversely: increasing the temperature decreases the density
"Increasing the temperature of a substance decreases its density." The Study Guide adds: "Thus, the density of air varies inversely with temperature. This statement is true only at a constant pressure."
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
10. According to the Study Guide, why is moist air lighter than dry air?
- A. Water vapor is lighter than air
- B. Moist air is always at a higher pressure
- C. Moist air always has a lower temperature
- D. Moisture raises the dew point above the air temperature
Show answer
Answer: A. Water vapor is lighter than air
"Water vapor is lighter than air; consequently, moist air is lighter than dry air." So as the water content increases, "the air becomes less dense, increasing density altitude and decreasing performance."
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
Wind, obstructions and wind shear
11. According to the Study Guide, what can an inadvertent microburst encounter result in?
- A. A steady, smooth climb away from the ground
- B. Structural icing on the airfoil
- C. A lower density altitude and better performance
- D. Terrain impact or flight dangerously close to the ground
Show answer
Answer: D. Terrain impact or flight dangerously close to the ground
The small UA may meet "a performance-increasing headwind, followed by performance-decreasing downdrafts, followed by a rapidly increasing tailwind. This can result in terrain impact or flight dangerously close to the ground."
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
12. How does the Study Guide describe the airflow down the leeward side of a mountain?
- A. It flows smoothly and helps carry an aircraft over the peak
- B. It follows the contour of the terrain and is increasingly turbulent
- C. It becomes calm close to the terrain
- D. It rises in steady upward currents
Show answer
Answer: B. It follows the contour of the terrain and is increasingly turbulent
"As the air flows down the leeward side of the mountain, the air follows the contour of the terrain and is increasingly turbulent. This tends to push an aircraft into the side of a mountain." The smooth upward flow is on the windward side.
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
Ceiling, visibility and Part 107 weather limits
13. According to the Study Guide, when are clouds reported as broken?
- A. When five-eighths to seven-eighths of the sky is covered with clouds
- B. When the entire sky is covered with clouds
- C. When one-eighth to two-eighths of the sky is covered with clouds
- D. When the clouds are more than 12,000 feet above the station
Show answer
Answer: A. When five-eighths to seven-eighths of the sky is covered with clouds
The Study Guide: "Clouds are reported as broken when five-eighths to seven-eighths of the sky is covered with clouds." "Overcast means the entire sky is covered with clouds."
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
14. From what location does 107.51(c) say the minimum flight visibility is observed?
- A. The location of the small unmanned aircraft
- B. The nearest airport weather station
- C. The position of the visual observer
- D. The location of the control station
Show answer
Answer: D. The location of the control station
107.51(c): "The minimum flight visibility, as observed from the location of the control station must be no less than 3 statute miles."
Source: eCFR: 14 CFR 107.51, Operating limitations for small unmanned aircraft (as of Nov 3, 2026)
Stability, pressure, inversions and fronts
15. According to the Study Guide, how does the air at the top of an inversion layer act?
- A. As a source of strong updrafts that build cumulus clouds
- B. As a barrier that clears fog and haze from the layer below
- C. As a lid, keeping weather and pollutants trapped below
- D. As the level where low-level wind shear always ends
Show answer
Answer: C. As a lid, keeping weather and pollutants trapped below
"When the temperature of the air rises with altitude, a temperature inversion exists." The Study Guide says "The air at the top of the layer acts as a lid, keeping weather and pollutants trapped below."
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
16. According to the Study Guide, what happens to small vertical disturbances in a stable atmosphere?
- A. They tend to become larger, resulting in turbulent airflow
- B. They dampen out and disappear
- C. They grow into thunderstorms on a daily basis
- D. They raise the density altitude
Show answer
Answer: B. They dampen out and disappear
"A stable atmosphere makes vertical movement difficult, and small vertical disturbances dampen out and disappear." Growth into turbulent airflow happens "In an unstable atmosphere".
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
Dew point, fog, frost and icing
17. What does the Study Guide say aerodynamic cooling can do to an airfoil?
- A. Keep the airfoil above freezing when the ambient temperature is below 0 °C
- B. Remove frost from the airfoil during takeoff
- C. Raise the dew point of the air flowing over the airfoil
- D. Lower its temperature to 0 °C even though the ambient temperature is a few degrees warmer
Show answer
Answer: D. Lower its temperature to 0 °C even though the ambient temperature is a few degrees warmer
"Aerodynamic cooling can lower temperature of an airfoil to 0° C even though the ambient temperature is a few degrees warmer." Structural icing needs the temperature where moisture strikes the aircraft to be "0° C or colder."
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
18. Which of these is one of the four methods the Study Guide gives by which air can reach the saturation point?
- A. Air warming as it flows down the leeward side of a mountain
- B. Air cooling at night through contact with the cooler ground
- C. Air pressure rising at a single weather station
- D. Water vapor being removed from the air
Show answer
Answer: B. Air cooling at night through contact with the cooler ground
"There are four methods by which air can reach the saturation point." The third: "when air cools at night through contact with the cooler ground, air reaches its saturation point."
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
Clouds and thunderstorms
19. Why does the Study Guide say it is inadvisable to operate a small UA in an area of rapidly building cumulus clouds?
- A. The growth rate of the cloud may exceed 3,000 feet per minute
- B. Every cumulus cloud grows into a thunderstorm
- C. Cumulus clouds always produce hail at the surface
- D. Cumulus clouds block the Remote ID broadcast
Show answer
Answer: A. The growth rate of the cloud may exceed 3,000 feet per minute
The Study Guide says the growth rate of a building cumulus cloud "may exceed 3,000 feet per minute, so it is inadvisable to operate a small UA in an area of rapidly building cumulus clouds." It also notes that "most cumulus clouds do not grow into thunderstorms".
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)
20. How does the Study Guide describe the transition of a thunderstorm cell from one stage to another?
- A. Abrupt and easy to see from the ground
- B. Marked by the cloud top reaching 12,000 feet
- C. Subtle, and virtually impossible to detect visually
- D. Always complete within 5–15 minutes
Show answer
Answer: C. Subtle, and virtually impossible to detect visually
"It is virtually impossible to visually detect the transition from one stage to another; the transition is subtle and by no means abrupt."
Source: FAA-G-8082-22, Remote Pilot – Small Unmanned Aircraft Systems Study Guide (August 2016)