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I-270 Saint Louis Road Conditions
Radar and live pavement conditions on the Saint Louis bypass — plus closures, road work and the I-255 across the south that carries the rest of the ring.
Updated Sep 1, 2026 3:03 AM CDT · Mostly dry
Lowest 77°F near Saint Louis, Missouri · Highest wind 6 mph near Saint Louis, Missouri
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I-270 bypasses Saint Louis for 51 miles. It is not a full ring: I-255 across the south carries the rest of the way round.
- Ring road for: Saint Louis, Missouri
- Length: 51 mi
- Type: Bypass
- Ring completed by: I-255 across the south
Weather data from Sep 1, 2026 3:03 AM CDT
77°F
82°F
6 mph
29.95-29.96 inHg
Current I-270 Conditions by State
No full closures are reported on I-270 as of Sep 1, 2026 3:03 AM CDT, and no lane closures or roadworks either. Always check with the responsible state DOT before setting off.
Missouri I-270 weather conditions
Summaries fetched Aug 31, 2026 7:04 AM CDT
Saint Louis, MO weather
- In Saint Louis, MO, a heat advisory is currently in effect from 12:00 PM on August 31, 2026, until 8:00 PM on September 4, 2026
- The forecast indicates a maximum feels like temperature of 98°F expected in the next 5 to 6 hours, which poses a temperature risk for outdoor activities
- As of 7:03 AM, the temperature is 73°F with a dew point of 65°F and humidity at 74%
- Winds are blowing from the south-southeast at 2.8 MPH
- The atmospheric pressure is measured at 30.06 inHg, and visibility is clear at 9.9 miles
- The weather is sunny with a UV index of 0, indicating low sun exposure risk.
I-270 Road Weather FAQ
- Is I-270 closed right now?
- No full closures are reported on I-270. No lane closures or roadworks are reported either.
- What are I-270 road conditions today?
- The map on this page colors the route along I-270 by what is on the pavement right now — dry, wet, slush, snow or ice — from radar and surface data, last updated Sep 1, 2026 3:03 AM CDT. Right now temperatures run from 77°F to 82°F and the strongest wind is 6 mph.
- How often are I-270 road conditions updated?
- The road surface and weather layers are rebuilt whenever this page is opened with data more than ten minutes old, and refreshed on a schedule in between, so nothing here is more than about two hours old even on a road nobody has looked at. Closures and road blocks are re-imported from the state 511 feeds every fifteen minutes, and the written state-by-state summaries are refreshed daily. Every section on this page carries the time its data was fetched.
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