Posh-Weather.Gov

1.1.0

Functions/Get-CurrentWindChillByZip.ps1

                                function Get-CurrentWindChillByZip {

    <#

.SYNOPSIS

This script will show the current weather information based off your public IP.

.DESCRIPTION

This script uses the public IP information from Ipinfo.io to feed the longitude and latitude to the Weather.Gov API which than receives the current weather information.

.FUNCTIONALITY

API Calls, JSON, Terminal Output

.COMPONENT

Ipinfo.io, Weather.Gov API, PowerShell

.INPUTS

Ipinfo.io JSON response

.OUTPUTS

Weather.Gov JSON response

.EXAMPLE

Get-CurrentWeatherByIP

.NOTES

Developer: ITNinja01

Date: 07-03-2026

Version: 1.0.0

#>

    $ZipCode = Read-Host -Prompt "Please enter your ZIP Code, if you are in the United States?"

    $CountryFullName = Read-Host -Prompt "Please enter your country (e.g., US, CA, GB), or press Enter to auto-detect"

    $CountryHashTable = @{

        'Andorra'                      = 'AD'

        'Argentina'                    = 'AR'

        'American Samoa'               = 'AS'

        'Austria'                      = 'AT'

        'Australia'                    = 'AU'

        'Bangladesh'                   = 'BD'

        'Belgium'                      = 'BE'

        'Bulgaria'                     = 'BG'

        'Brazil'                       = 'BR'

        'Canada'                       = 'CA'

        'Switzerland'                  = 'CH'

        'Czech Republic'               = 'CZ'

        'Germany'                      = 'DE'

        'Denmark'                      = 'DK'

        'Dominican Republic'           = 'DO'

        'Spain'                        = 'ES'

        'Finland'                      = 'FI'

        'Faroe Islands'                = 'FO'

        'France'                       = 'FR'

        'Great Britain'                = 'GB'

        'French Guyana'                = 'GF'

        'Guernsey'                     = 'GG'

        'Greenland'                    = 'GL'

        'Guadeloupe'                   = 'GP'

        'Guatemala'                    = 'GT'

        'Guam'                         = 'GU'

        'Guyana'                       = 'GY'

        'Croatia'                      = 'HR'

        'Hungary'                      = 'HU'

        'Isle of Man'                  = 'IM'

        'India'                        = 'IN'

        'Iceland'                      = 'IS'

        'Italy'                        = 'IT'

        'Jersey'                       = 'JE'

        'Japan'                        = 'JP'

        'Liechtenstein'                = 'LI'

        'Sri Lanka'                    = 'LK'

        'Lithuania'                    = 'LT'

        'Luxembourg'                   = 'LU'

        'Monaco'                       = 'MC'

        'Moldavia'                     = 'MD'

        'Marshall Islands'             = 'MH'

        'Macedonia'                    = 'MK'

        'Northern Mariana Islands'     = 'MP'

        'Martinique'                   = 'MQ'

        'Mexico'                       = 'MX'

        'Malaysia'                     = 'MY'

        'Holland'                      = 'NL'

        'Norway'                       = 'NO'

        'New Zealand'                  = 'NZ'

        'Phillippines'                 = 'PH'

        'Pakistan'                     = 'PK'

        'Poland'                       = 'PL' 

        'Saint Pierre and Miquelon'    = 'PM'

        'Puerto Rico'                  = 'PR'

        'Portugal'                     = 'PT'

        'French Reunion'               = 'RE'

        'Russia'                       = 'RU'

        'Sweden'                       = 'SE'

        'Slovenia'                     = 'SI'

        'Svalbard & Jan Mayen Islands' = 'SJ'

        'Slovak Republic'              = 'SK'

        'San Marino'                   = 'SM'

        'Thailand'                     = 'TH'

        'Turkey'                       = 'TR'

        'Vatican'                      = 'VA'

        'Virgin Islands'               = 'VI'

        'Mayotte'                      = 'YT'

        'South Africa'                 = 'ZA'

        'United States'                = 'US'

        'USA'                          = 'US'

        'US'                           = 'US'

    }  

    if ($CountryHashTable.ContainsKey($CountryFullName)) {

        $Country = $CountryHashTable[$CountryFullName]

    }

    else {

        Write-Host "Country not recognized or not provided. Defaulting to 'US'."

        $Country = 'US'

    }

    $URI = "https://api.zippopotam.us/$Country/$ZipCode"

    # Check if the ZIP Code is valid by checking the status code of the response. If it's 200, the ZIP Code is valid. If not, it will show an error message and exit the function.   

    $WebResponse = Invoke-WebRequest -Uri $URI -Method Get -ErrorAction SilentlyContinue

    if ($WebResponse.StatusCode -eq 200) {

        Write-Host "ZIP Code found. Fetching weather data..."

    }

    else {

        Write-Host "ZIP Code not found. Please check the ZIP Code and try again." -ForegroundColor Red

        $LASTEXITCODE = 1

        return

    }

    #Extracts city, country, latitude and longitude from the response

    $response = Invoke-RestMethod  -Uri $URI

    $latitude = $response.places.latitude

    $longitude = $response.places.longitude

    $City = $response.places.'place name'

    #Creating variables to access weather

    $APIWeatherURL = "https://api.weather.gov/points/$latitude,$longitude"

    $CurrentWeather = Invoke-RestMethod $APIWeatherURL

    # Get nearest observation station

    $stationUrl = $CurrentWeather.properties.observationStations

    $stations = Invoke-RestMethod -Uri $stationUrl

    $station = $stations.features[0].properties.stationIdentifier

    # Get latest observation

    $Observation = Invoke-RestMethod -Uri "https://api.weather.gov/stations/$station/observations/latest"

        $WindChill = $Observation.properties.WindChill.value

    #Math equation for finding Fahrenheit from Celsius degrees and converting wind speed from km/h to mph

    $ConvertedDegree = [math]::Round(($WindChill * 9) / 5 + 32, 2)

    $stationName = $Observation.properties.stationname

    $timestamp = $Observation.properties.timestamp

    #Carriage return to make it easier to read in the terminal

    $crlf = [Environment]::NewLine

    Write-Host "$crlf

$City, $Country Current Weather

WindChill: $ConvertedDegree °F

Observation Time: $timestamp

Weather Station: $stationName

$crlf

"

}