Weather Everywhere

WeatherEverywhere.ps1

$global:WeatherJob = Start-ThreadJob { 
    while($true) {
        (irm "wttr.in?format=3").Trim() -replace "^.*:\s*"; sleep 300
    }
} -Name WeatherQuery

$null = Register-ObjectEvent -InputObject $WeatherJob.Output -EventName DataAdded -Action { 
    # The $Sender is the actual Output collection
    # $EventArgs includes the index at which the output was added
    # Update the Window Title with the weather each time it updates
    $Host.Ui.RawUi.WindowTitle = "PS " + $PSVersionTable.PSVersion + " " + $Sender[$EventArgs.Index]
    # Clean out old Output (so there's only ever one)
    for ($i=$EventArgs.Index -1; $i -gt 0; $i--) {
        $Sender.RemoveAt($i) 
    }
} -SourceId WeatherUpdate

# for bonus points, use the output in your prompt:
Add-PowerLineBlock { $WeatherJob.Output[-1] }