Alton, Illinois Weather
Alton, Illinois — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery for Alton, Madison County.
Full aviation weather for Alton is published on the St Louis Regional Airport (KALN) page, 12 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 6 airfields within reach of Alton have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near Alton: St Charles County Regional Airport/Smartt Field (KSET) 22 km · St. Louis Lambert International Airport (KSTL) 22 km · Creve Coeur Airport (K1H0) 34 km · St Louis Downtown Airport (KCPS) 36 km · Spirit of St Louis Airport (KSUS) 48 km
Conditions reported at KALN describe the airfield itself. Weather 12 km away can differ, particularly in terrain or near the coast. For conditions at Alton specifically, see the current conditions and forecast above.
About Alton, Illinois
Alton rises from the Mississippi River's embrace, a place where the broad, muddy current dictates the very breath of the land. It lies 10.2 miles north-east of Florissant, MO (from Florissant, MO: bearing 47°T), and is situated 6.5 miles east-north-east of Old Jamestown. Bluffs, worn smooth by centuries of wind and water, stand sentinel over the riverfront, their limestone faces catching the sun in hues of ochre and pale grey. The air here carries a peculiar dampness, a constant whisper of the vast river that flows ever onward, its presence a palpable force shaping the terrain and the very spirit of the place. Beyond the river's immediate reach, the land rolls gently, a mosaic of cultivated fields and stands of oak and hickory, hinting at the agricultural heart that beats beneath the surface. The history of Alton is deeply etched into its very bones, a narrative of industry and resilience woven from threads of steamboat trade and quarrying. For generations, the limestone extracted from its iconic bluffs provided the building blocks for countless structures, a testament to the enduring strength of the earth and the labor of its people. This riverine heritage, marked by the ebb and flow of commerce on the Mississippi, has shaped Alton's economy, fostering a character that is both sturdy and adaptable, forever tied to the lifeblood of the waterway. The ghosts of its past linger in the weathered brick of its older buildings and the quiet dignity of its mature neighborhoods, a continuous dialogue between yesterday and today.
Live animated radar for Alton and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | Alton, Madison County, Illinois |
| Coordinates | 38.890604°N, 90.184276°W |
| Timezone | Central Time (America/Chicago) |
| ZIP Code(s) | 62002, 62018 |
| Area Code | 309 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Alton, Illinois Weather Page
This page provides live weather conditions and forecasts for Alton, Illinois, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Alton includes coordinates 38.890604°N, 90.184276°W, situated in Madison County. ZIP code 62002, 62018. Telephone area code: 309. Timezone: Central Time (America/Chicago).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
