Upper Alton

Weather in Upper Alton, live

The weather over Upper Alton as it is measured right now, from radar and the airport reports at Alton/St Louis Rgnl and St Charles/Smartt Arpt, beside the forecast model’s temperature and wind. Each layer says which it is.

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Right now · as of

  • KALN Alton/St Louis Rgnl, 11 km: 8 °C (46 °F), wind calm, visibility 10+ miles · VFR · 8 minutes ago
  • KSET St Charles/Smartt Arpt, 25 km: 8 °C (46 °F), wind calm, visibility 0.25 miles, FG · LIFR · 9 minutes ago
  • KSTL St Louis/Lambert Intl, 26 km: 11 °C (52 °F), wind calm, visibility 10+ miles · VFR · 12 minutes ago
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What the map shows over Upper Alton

  • Rain radarMeasuredUpper Alton is inside RainViewer’s radar coverage. Frames every 10 minutes for the last 2 hours.Open on the mapAbout this layer
  • LightningMeasuredUpper Alton is inside the area NOAA’s lightning layer covers, the Americas and the Pacific. Strike density every 15 minutes.Open on the mapAbout this layer
  • Temperature mapForecast modelNOAA’s GFS model on a 0.25° grid, points about 25 km apart: the forecast for now, not a thermometer reading.Open on the mapAbout this layer
  • Wind mapForecast modelWind 10 metres up from the same model, so it smooths over streets and hills.Open on the mapAbout this layer
  • Severe weather alertsOfficial warningsActive alerts from the US National Weather Service, each pinned as one point.Open on the mapAbout this layer
  • Airport weather (METAR)MeasuredThe latest reports from Alton/St Louis Rgnl (KALN), 11 km away, St Charles/Smartt Arpt (KSET), 25 km away and St Louis/Lambert Intl (KSTL), 26 km away, usually every hour.Open on the mapAbout this layer

Good to know

  • Radar, lightning and airport reports are measurements. Temperature and wind are a forecast model’s values for the nearest hour, which can differ from what a thermometer in Upper Alton reads.
  • Radar detail stops at about zoom 7 and lightning at zoom 8, so the weather of a single street isn’t resolved.
  • For a picture of conditions, not for safety decisions: follow the warnings of your local weather service.

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