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I-15 Interstate Road Conditions 511
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
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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.
Arizona I-15 weather conditions
- Current weather conditions in Arizona, AZ indicate a temperature of 3.5°C (38°F) with a feels-like temperature of 1.7°C (35°F)
- The dew point is at -13.4°C (7°F) and humidity is relatively low at 28%
- The atmospheric pressure is 1025 mb (30.3 inHg)
- Winds are coming from the southeast at 12.6 kph (7.8 mph)
- Visibility is good at 16 km (9.9 miles) and the weather is mostly clear
- There are no active weather alerts at this time.
California I-15 weather conditions
- Current weather conditions in California, CA indicate a temperature of 4.1°C (39°F) with a dew point of 2.1°C (36°F) and a humidity level of 87%
- The atmospheric pressure is measured at 1029 mb (30.4 inHg)
- Winds are light, blowing from the east at 4 km/h (3 mph)
- Visibility is relatively good at approximately 11.7 km (7.3 miles), although patchy fog is present, which may affect local driving conditions
- There are no significant weather alerts at this time, and no precipitation is occurring.
Idaho I-15 weather conditions
- Current weather conditions in Idaho, ID indicate a temperature of -6.0°C (21°F) with a dew point of -9.9°C (14°F)
- The relative humidity is at 74%, contributing to a chilly atmosphere
- Winds are light, blowing from the west at approximately 1 mph (1 km/h)
- The visibility is good at 16.1 km (10.0 miles), and the sky is mostly cloudy, with cloud coverage around 100%
- The atmospheric pressure is measured at 1033 mb (30.49 inHg)
- There are no active weather alerts at this time, and the conditions are currently stable with no precipitation expected.
Montana I-15 weather conditions
- Current weather conditions in Montana, MT indicate a temperature of -0.9°C (30°F) with a dew point at -5.6°C (21°F) and a relative humidity of 70%
- The pressure is 1026 mb (30.3 inHg)
- Winds are coming from the west-southwest at 13 km/h (8 mph)
- Visibility is good at 16 km (9.9 miles), and the sky is partly cloudy, covering about 40%
- There are no active weather alerts at this time.
Nevada I-15 weather conditions
- Currently in Nevada, NV, the temperature is -2.7°C (27°F) with a dew point of -11.9°C (10°F) and humidity at 49%
- The pressure is 1032 MB (30.48 inHg)
- Winds are coming from the south-southwest at 4.5 KPH (2.8 MPH)
- Visibility is good at 16 KM (9.9 miles) under mostly clear skies
- There are no active weather alerts at this time.
Utah I-15 weather conditions
- Current weather conditions in Utah, UT indicate a temperature of -3.5°C (25.7°F) with a dew point of -7.3°C (18.9°F)
- The humidity is at 75%, which may contribute to a chilly feel in the air
- The wind is coming from the west-northwest at a speed of 3.6 kph (2 mph), with visibility reported at 16 km (9.9 miles)
- The weather is mostly clear, providing a calm atmosphere
- There are no active weather alerts at this time, and no precipitation is occurring
- The atmospheric pressure stands at 1035 mb (30.6 inHg).
Cameras for road I-15
IDOT: 187th. HD
13 days ago
IDOT: Harlem Ave. HD
13 days ago
IDOT: W/o LaGrange Rd. HD
13 days ago
IDOT: E/o 104th Ave. HD
9 days ago
IDOT: Wolf Rd. HD
9 days ago
IDOT: Near Wt. Station HD
9 days ago
IDOT: Parker Rd. HD
9 days ago
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