I check various sources to plan my morning bicycle commute. I wish this would all appear on one wiki page.
Google rolls up the weather forecast and presents it well enough. google
Google maps is handy if the weather is great and I'm looking for variety. maps
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Forecast.io, which grew out of the ‘Dark Sky’ app, provides a prediction of your local weather for the next hour, specifically is it going to rain or snow. Together with the expect daily/weekly forecast. forecast.io
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Portland General Electric power outages. map
US ground level air quality recording particulates from smoke and other sources. map