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Wsdot Mountain Pass Conditions API (1.0.0)

Download OpenAPI specification:

Wsdot Mountain Pass Conditions API - Washington State Department of Transportation APIs

pass-conditions

Real-time mountain pass conditions including weather, road status, and travel restrictions.

List current conditions for all monitored mountain passes.

Responses

Request samples 

import { fetchMountainPassConditions } from 'ws-dottie/wsdot-mountain-pass-conditions/core';

const data = await fetchMountainPassConditions({
  fetchMode: 'native',
  validate: true
});

console.log(data);

Response samples

Content type
application/json

Example of a successful response from the API (showing first item of 16 total)

[
  • {
    }
]

Get current conditions for a specific mountain pass by ID.

Responses

Request samples 

import { fetchMountainPassConditionById } from 'ws-dottie/wsdot-mountain-pass-conditions/core';

const data = await fetchMountainPassConditionById({
  params: {
    "PassConditionID": 12
  },
  fetchMode: 'native',
  validate: true
});

console.log(data);

Response samples

Content type
application/json

Example of a successful response from the API

{
  • "MountainPassId": 12,
  • "MountainPassName": "White Pass US 12",
  • "Latitude": 46.638333,
  • "Longitude": -121.39,
  • "DateUpdated": "2025-11-15T16:32:50.010Z",
  • "TemperatureInFahrenheit": 44,
  • "ElevationInFeet": 4500,
  • "WeatherCondition": "Raining",
  • "RoadCondition": "Bare and wet",
  • "TravelAdvisoryActive": true,
  • "RestrictionOne": {
    },
  • "RestrictionTwo": {
    }
}