METAR Decoder
Interactive METAR parser with color-coded breakdown and detailed explanations
Decode aviation weather reports instantly • Learn METAR format • Professional pilot tool
Enter METAR Report
Decoded Elements
Color Legend
How to Use the METAR Decoder
Step-by-Step Guide
- 1 Enter or paste a METAR report in the text area
- 2 The decoder automatically parses each element
- 3 Review color-coded breakdown with explanations
- 4 Use sample METARs to practice different weather conditions
Key Features
- ✓ Real-time parsing: Instant decoding as you type
- ✓ Color coding: Visual organization by element type
- ✓ Detailed explanations: Learn what each code means
- ✓ Multiple formats: US and international METAR support
Pro Tip: Learn more about how to read METAR reports or explore our guide on flight categories (VFR/IFR) to deepen your understanding of weather reporting.
Frequently Asked Questions
What is a METAR report and how do I read it?
METAR (Meteorological Aerodrome Report) is a standardized format for reporting weather information at airports. It includes station identifier, observation time, wind, visibility, weather phenomena, clouds, temperature, dewpoint, and altimeter setting. Each element follows a specific format, making it universal for aviation weather reporting worldwide.
How often are METAR reports updated?
Standard METAR reports are issued every hour at most airports, typically at 53 minutes past the hour. Special reports (SPECI) are issued when significant weather changes occur between regular observations. Automated stations may provide continuous updates, while some smaller airports may have limited reporting schedules.
What do the cloud abbreviations in METAR mean?
Cloud coverage abbreviations are: SKC (Sky Clear), FEW (1-2 oktas, few clouds), SCT (3-4 oktas, scattered), BKN (5-7 oktas, broken), OVC (8 oktas, overcast). The number following indicates height in hundreds of feet AGL. For example, BKN015 means broken clouds at 1,500 feet above ground level.
What does the visibility number mean in METAR?
Visibility in METAR is reported in statute miles in the US (like 10SM for 10 statute miles) or in meters internationally (like 9999 for 10km or greater). Visibility less than 7 miles indicates reduced visibility conditions. Fractions like 1/2SM indicate very poor visibility of half a statute mile.
How do I decode weather phenomena codes in METAR?
Weather phenomena use descriptors and precipitation types. Descriptors include MI (shallow), BC (patches), DR (drifting), BL (blowing), SH (showers), TS (thunderstorm), FZ (freezing). Precipitation types include RA (rain), SN (snow), PL (ice pellets), GR (hail). Intensity is shown by - (light), no symbol (moderate), or + (heavy).
What is the difference between METAR and TAF?
METAR reports current observed weather conditions, while TAF (Terminal Aerodrome Forecast) predicts future weather conditions for the next 24-30 hours. METAR uses past tense observations, while TAF uses future forecasting. Both use similar coding formats but TAF includes time periods and probability indicators.