Granite City

Weather in Granite City, live

The weather over Granite City as it is measured right now, from radar and the airport reports at St Louis/Downtown Arpt and St Louis/Lambert Intl, beside the forecast model’s temperature and wind. Each layer says which it is.

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Right now · as of

  • KCPS St Louis/Downtown Arpt, 15 km: 6 °C (43 °F), wind calm, visibility 10+ miles · VFR · 16 minutes ago
  • KSTL St Louis/Lambert Intl, 20 km: 9 °C (49 °F), wind calm, visibility 10+ miles · VFR · 18 minutes ago
  • KALN Alton/St Louis Rgnl, 23 km: 7 °C (44 °F), wind calm, visibility 10+ miles · VFR · 14 minutes ago
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What the map shows over Granite City

  • Rain radarMeasuredGranite City is inside RainViewer’s radar coverage. Frames every 10 minutes for the last 2 hours.Open on the mapAbout this layer
  • LightningMeasuredGranite City 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 St Louis/Downtown Arpt (KCPS), 15 km away, St Louis/Lambert Intl (KSTL), 20 km away and Alton/St Louis Rgnl (KALN), 23 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 Granite City 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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