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Part 107 Weather — Area III — sources and effects of weather, 5% of the test

Weather is only 5% of the test since September 29, 2025 — about 3 questions — but they are easy points if you can decode a METAR or a TAF and know how heat, altitude and humidity affect your drone.

Try 20 free questionsPractice Weather
Share of the test
5%
Questions on test day
≈ 3 of 60
Practice questions in Admezo
8
Passing score (whole test)
70%

What the FAA tests in Area III

The knowledge elements of the Airman Certification Standards (FAA-S-ACS-10B) for Weather. The FAA weighs this Area at 5% of the test since September 29, 2025.

  • Sources of weather: internet briefings, METARs, TAFs, weather charts, ASOS and AWOS
  • Density altitude and its effect on performance
  • Wind, atmospheric stability, air masses and fronts
  • Thunderstorms, microbursts, tornadoes, icing, hail, fog, ceiling and visibility, lightning

In the Admezo bank: 2 topics, 8 questions

  • A. Sources of Weather
  • B. Effects of Weather on Performance

Key facts to know

FAA METAR/TAF key; PHAK ch. 12
A ceiling is the lowest broken (BKN) or overcast (OVC) layer, or the vertical visibility into an obscuration.
FAA METAR/TAF key
METAR wind is given in degrees true and knots: 18015G25KT means from 180° at 15 knots, gusting to 25.
Remote Pilot Study Guide; PHAK
High, hot and humid conditions raise density altitude and reduce rotor efficiency and climb performance.
PHAK ch. 12
Microbursts are about 1–2 miles across, last 5–15 minutes, with downdrafts up to 6,000 feet per minute.
PHAK ch. 12
Stable air brings stratiform clouds, smooth air and poor visibility; unstable air brings cumuliform clouds, turbulence and showers.

Three practice questions with answers

From the Admezo bank for Weather, outside the 20 free questions, as they appear in the app once answered — with the rule and a link to the official source. Rules checked October 27, 2026.

  1. 1 / 3IIIMultiple choiceIII. Weather — A. Sources of Weather

    In a METAR, what does the code "BR" mean?

    • Mist (correct answer)
    • Haze
    • Blowing rain

    Correct answer: A

    BR is mist (visibility 5/8 statute mile or more); FG is fog and HZ is haze (FAA METAR/TAF key).

    Source: faasafety.govQuestion bank checked October 27, 2026

  2. 2 / 3IIIMultiple choiceIII. Weather — B. Effects of Weather on Performance

    At dawn the temperature is 12 °C and the dew point 11 °C, with clear skies and calm wind. What should I expect at my low-lying site?

    • Radiation fog (correct answer)
    • Thunderstorms
    • Advection fog

    Correct answer: A

    A small temperature/dew point spread on a clear, calm night favors radiation fog in low areas; advection fog needs wind moving moist air over a colder surface (PHAK p. 12-15 to 12-16).

    Source: faa.govQuestion bank checked October 27, 2026

  3. 3 / 3IIIMultiple choiceIII. Weather — A. Sources of Weather

    A METAR reads: KXYZ 141755Z 22012G20KT 10SM SCT035 BKN080 24/14 A2998. What is the ceiling?

    • 3,500 feet AGL
    • 8,000 feet AGL (correct answer)
    • There is no ceiling

    Correct answer: B

    The ceiling is the lowest broken or overcast layer; SCT035 is scattered, so BKN080 (8,000 feet AGL) is the ceiling (FAA METAR/TAF key card).

    Source: faasafety.govQuestion bank checked October 27, 2026

Practice all 8 Weather questions

How to prepare for Weather

Study tips, not a promise: Admezo doesn't guarantee a result beyond its pass guarantee.

  • Decode real METARs daily

    Pick an airport near you and read its METAR and TAF every morning. After a week, the abbreviations on the test will feel familiar.

  • Link each condition to its effect

    Questions rarely ask for a definition alone: they ask what happens to your drone. Tie density altitude to performance, fronts to wind shifts, thunderstorms to gust fronts.

  • Don't over-study

    At 5% of the test, Weather deserves a solid review, not weeks. Spend the time you save on Regulations.

Weather: frequently asked questions

About 3 of the 60 questions: Weather has been 5% of the test since September 29, 2025, down from 11–16% under the older blueprint.

Practice Weather in the real format

8 explained questions on Weather, mock exams weighted like the FAA test, and a dashboard that shows exactly which topics to review.

Try 20 free questionsPractice Weather

No account or card needed for the trial. Lifetime access: $39, one-time payment.

The other Areas of the Part 107 test

For the big picture — format, registration, retakes and recent changes — read the complete Part 107 test guide, or browse the 20 free questions with answers.

Admezo is an independent study tool. Not affiliated with, endorsed by, or sponsored by the Federal Aviation Administration (FAA).

Sources: 14 CFR Parts 107, 89 and 48 (eCFR), Advisory Circular 107-2A, Airman Certification Standards FAA-S-ACS-10B, the Aeronautical Information Manual and FAA handbooks, as in force on October 27, 2026.