Dual Degree Fahrenheit Celsius

Stop converting in your head. See every reading in both Fahrenheit and Celsius at the same time, side by side.

For Americans living abroad, foreign visitors in the US, expats, and anyone who grew up with one temperature scale and lives with the other. No more flipping between two weather apps. No more "times 9 over 5, plus 32".

YOUR CHOICES Which scale shows larger. Actual or feels-like. Metric or imperial. hPa or inHg. Date format: D/M/YY, M/D/YY, ISO, or longhand. The metric pinned at the top of the panel and every widget. App language in ten options: English, Spanish, German, French, Italian, Portuguese, Japanese, Korean, Simplified Chinese, Greek.

REAL FEEL OR ACTUAL One toggle, app-wide. Current conditions, hourly, daily, widgets, lock-screen complication: all follow your pick. Both scales still show.

PIN ONE METRIC A favorite-metric slot sits under the temperature on the main screen and every widget. Pin PM2.5, PM10, wind, humidity, dew point, UV, pressure, visibility, cloud cover, or precipitation probability.

EVERY READING, BOTH SCALES • Current temperature in °F and °C, side by side • 24-hour hourly forecast with both scales every column • 15-day daily outlook with highs, lows, and a range bar • Tap any temperature for feels-like and dew point in both scales

AIR QUALITY Full breakdown of PM2.5, PM10, ozone, and NO₂ for every saved city, with AQI and a quality band.

LIGHTNING NEARBY When a thunderstorm is within 50 km, a card surfaces the closest strike, when it landed, and the count for the last 30 minutes. The corner bolt opens a full map of recent strikes with coordinates, address, and a one-tap handoff to Google Maps or Apple Maps. Coverage today is the Americas. Optional push alerts when a strike lands near a saved city.

WIDGETS Pin a city to your home or lock screen. Small, medium, large, and (on iPad) extra-large sizes, plus accessory widgets for the lock screen. Each widget shows your favorite metric and honors actual/feels-like.

CITY FLAGS Vancouver shows the Vancouver flag. Barcelona shows Barcelona's. New York shows NYC's. Sub-national flags where they exist, country flags as fallback.

PRIVATE BY DESIGN No account. No analytics. No ads. No third-party trackers. Coordinates go to Apple WeatherKit and Open-Meteo for forecasts, nowhere else, never tied to your identity.

DATA SOURCES Apple WeatherKit for temperature, conditions, and forecasts. Open-Meteo for air quality, and a backup forecast where WeatherKit coverage is sparse. Lightning via NOAA's GOES Geostationary Lightning Mapper.