# Airinfo Viewer

> Japan Airport Weather Charts

Canonical page: [https://chrome-stats.com/d/id6779813293](https://chrome-stats.com/d/id6779813293)

## Overview

- **ID:** `id6779813293`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Naoki Chiba
- **Category:** Weather
- **Version:** 1.1.0
- **Last updated:** 2026-08-23
- **First published:** 2026-06-15
- **Size:** 1.34 MB
- **Data as of:** 2026-09-24
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/airinfo-viewer/id6779813293)
- **Website:** [https://thivanao-jp.github.io/app-support/airinfo-viewer/index.html](https://thivanao-jp.github.io/app-support/airinfo-viewer/index.html)
- **Privacy policy:** [https://thivanao-jp.github.io/app-support/airinfo-viewer/privacy-policy.html](https://thivanao-jp.github.io/app-support/airinfo-viewer/privacy-policy.html)

## Description

TAF-based aviation weather charts for all 75 Japanese airports, now with an airport map, visual how-to-read guide, and distance from your location.

Airinfo Viewer organizes the aviation weather charts published by the Japan Meteorological Agency (JMA) so you can check each airport at a glance.

WHAT YOU CAN SEE
- Aerodrome Sequential Forecast (38 airports): official TAF-based forecasts issued by aviation weather offices, shown as time-series charts
- Aerodrome Sequential Information (37 airports): time-series charts generated automatically from numerical forecasts
- Aerodrome Weather Commentary: Japanese-language notes, sub-scenarios, weather charts and temperature forecasts (regular and special editions)

KEY FEATURES
- All 75 Japanese airports organized by region, searchable by name or ICAO code
- Airport map with pins for every airport, plus distance and bearing from your current location (location access is optional)
- Favorites for quick access to the airports you check often
- Switch between the near-term (hourly) and outlook (3-hourly) chart, with pinch-to-zoom
- Shows the last-updated time and refreshes with one tap
- A visual "How to Read" guide with diagrams for wind/crosswind, visibility, ceiling, and thunderstorm probability
- A help button on every chart that jumps straight to the relevant explanation
- A glossary of aviation weather terms (METAR, SIGMET, RVR, and more)

WHO IT'S FOR
- Pilots, student pilots, glider and light-aircraft enthusiasts
- Aviation and airband radio enthusiasts
- Anyone who wants to check the weather before heading to an airport

NOTE
- Data shown is published by the Japan Meteorological Agency's Aviation Weather Information service (this app is not affiliated with or endorsed by JMA)
- Always use official weather information and briefings for actual flight operations

## Rankings

- #2,128,513 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6779813293)