- Simple Weather Widget
- Weather ´
- SimpleMoon - Moon Phase
- SimpleWeather-Widget
- Simply Weather Radar
- Simply Weather.
- Simply-Forecast
- Simulate SKY
- Sinoptik
- Siouxland Weather
- Sismos@IPMA
- SISMO®
- SiteWarn
- SiuvsMobile
- SiVreme
- Skagit Valley Herald
- SkewTLogPro
- Ski Utah Snow Report
- SkiCast
- Skidspår.se
- Skilift Brunni
- Skintel App
- Skiresort.info: ski & weather
- Skisporet
- Sky and Moon phases calendar
- Sky Blue - Local Weather Warnings and Notifications
- Sky Light Pro
- SKY WACH
- SKY WACH
- SkyAlert: Alerta Sísmica
- Skybook Aviation Cloud
- SkyCandy - Sunset Forecast App
- Skycast
- SkyCharts XC EFB
- Skylight - Solar Widgets
- SkyLive
- Skymet Weather
- SkyPath Pro
- Skywatch BL
- FOX 17 Code Red Weather
- Sleek Weather App
- Smart Buoy
- Smart Buoys
- Smart Costa del Sol – Málaga
- Smart Farm Mobile
- Smart Forecast
- Smart Living WMR500
- Smart Qtel
- Smart Sea Level Sensors
- Smart Temp SMT-400
- SmartAir PM 2.5
- SmartCampo
- SmartCampo DAS
- SmartClock
- Smartirrigation Avocado
- Smartirrigation Blueberry
- Smartirrigation Citrus
- Smartirrigation Strawberry
- Smartirrigation Turf
- Smartirrigation Vegetable
- SmartLink Network
- SmartMeteo
- SmartMixin Weather
- SmartNews: News That Matters
- Sensees
- Smell MyCity
- Smell Pittsburgh
- SMHI VinterVäg
- SMHI Väder
- SMMAR 24.7
- SmOg
- Smog Info – jakość powietrza
- Smog Poland
- Smog Report
- Smog Selfie
- SmogAlarm 2.0
- Snappy Chicks 2 : The Guardian
- Sneeuwhoogte.nl
- SNN, Suncoast News Network
- SnoCountry Ski & Snow Report
- SNOdar
- Snow Alerts