I-15 Interstate Road Conditions 511

I-15

Weather for road I-15

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Interstate 15 (I‑15) runs from San Diego, California, to Sweet Grass, Montana at the Canadian border, forming a major north–south corridor through the western United States. It passes through cities such as San Diego, Las Vegas, St. George, Provo, Salt Lake City, Pocatello, Idaho Falls, Butte, Helena, and Great Falls.

  • Road system: Interstate Highway System
  • Year of construction: 1957
  • Length: 1,433 miles

Temperature

Wind Speed

Rain Precip.

Coverage

Up to 144 hours

Lowest temp.

-

Highest temp.

-

Highest wind

-

Pressure

-

Description

See live weather forecast for I‑15. Get real‑time I‑15 road and weather conditions displayed directly on the interactive map for your route through California, Nevada, Arizona, Utah, Idaho, and Montana. The map shows live weather conditions along Interstate 15, updated frequently to help drivers plan safer trips. Forecasts are generated for the next 6 hours at key highway points and include temperature and conditions such as clear skies, rain, storms, snow, high wind, hail, and more.

Weather conditions overview along the road I-15

Arizona I-15 weather conditions

  • Current weather conditions in Arizona, AZ indicate a temperature of 2.0°C (36°F) with a dew point of -4.5°C (24°F) and a relative humidity of 62%
  • The wind is coming from the west-northwest at 3 km/h (2 mph)
  • Visibility is good at 16 km (9.9 miles)
  • The weather is mostly clear, and there are no active weather alerts at this time
  • The atmospheric pressure is measured at 1019 mb (30.09 inHg).

California I-15 weather conditions

  • Currently, in California, CA, the weather is mostly clear with a temperature of 11.3°C (52°F)
  • The humidity is high at 94%, and the dew point is at 10.3°C (50.5°F)
  • The wind is gentle, blowing from the east-northeast at 1 km/h (0.6 mph)
  • Visibility is good at 16 km (9.9 miles)
  • The atmospheric pressure is 1019 mb (30.09 inHg)
  • There are no active weather alerts at this time, and no precipitation or snowfall is occurring.

Idaho I-15 weather conditions

  • Current weather conditions in Idaho, ID indicate a clear sky with a temperature of -5.1°C (22°F) and a dew point of -13.6°C (7°F)
  • The relative humidity is at 52%, contributing to a comfortable feel despite the cold
  • Winds are light, coming from the northwest at 2 km/h (1 mph)
  • Visibility is good, reaching up to 16.1 km (10 miles)
  • The atmospheric pressure is steady at 1026 mb (30.3 inHg)
  • There are no active weather alerts at this time, and there is no precipitation or snowfall reported.

Montana I-15 weather conditions

  • Montana, MT is currently experiencing a high wind watch from March 16 at 9:00 PM to March 17 at 6:00 PM
  • The current temperature is -24.2°C (−11.6°F) with feels like temperatures also at -24.2°C (−11.6°F), indicating a significant temperature risk for outdoor activities
  • The humidity is at 83%, and the pressure is 1040 mb (30.4 inHg)
  • Winds are coming from the south-southwest at approximately 8 kph (5 mph)
  • Visibility is reported at 7.1 km (4.4 miles), and the sky is partly cloudy.

Nevada I-15 weather conditions

  • In Nevada, NV, the current weather conditions indicate a temperature of 0.9°C (33.6°F) with a dew point of -9.4°C (15.1°F), resulting in a relative humidity of 46%
  • The wind is blowing from the northwest at 13 km/h (8 mph)
  • The atmosphere is partly cloudy with a visibility of 16 km (9.9 miles)
  • The pressure is measured at 1022 mb (30.18 inHg)
  • There are no active weather alerts at this time, and conditions are expected to remain stable.

Utah I-15 weather conditions

  • In Utah, the current weather conditions indicate a temperature of -0.5°C (31°F) with a dew point of -12.8°C (9°F) and a humidity level of 39%
  • The wind is blowing from the northwest at approximately 9 km/h (6 mph)
  • Visibility is good, reaching up to 16 km (9.9 miles)
  • The weather is mostly clear, and there are no significant impacts on outdoor activities at this time. However, a wind advisory is in effect from 5:50 AM to 9:00 AM local time today, which may lead to hazardous conditions due to increased wind speeds
  • It is advisable to take precautions if planning to be outdoors during this period.

Cameras for road I-15

IDOT: 187th. HD

2 months ago

Photo from camera: IDOT: 187th. HD

IDOT: Harlem Ave. HD

2 months ago

Photo from camera: IDOT: Harlem Ave. HD

IDOT: W/o LaGrange Rd. HD

2 months ago

Photo from camera: IDOT: W/o LaGrange Rd. HD

IDOT: E/o 104th Ave. HD

a month ago

Photo from camera: IDOT: E/o 104th Ave. HD

IDOT: Wolf Rd. HD

a month ago

Photo from camera: IDOT: Wolf Rd. HD

IDOT: Near Wt. Station HD

a month ago

Photo from camera: IDOT: Near Wt. Station HD

IDOT: Parker Rd. HD

a month ago

Photo from camera: IDOT: Parker Rd. HD

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