Data downloads

Current forecasts

Formats

Every file is the full SkyGrade score field for one forecast: a regular latitude/longitude grid at 0.03° spacing (about 3 km), covering 23–50°N and 125.5–66°W. Values are scores from 0 to 100. Each point is valid at its own local sunrise or sunset, so the grid is not a single moment in time.

GeoTIFF

Single-band float32 raster in EPSG:4326 (WGS84), deflate-compressed and tiled. NaN marks no data. Opens directly in QGIS, ArcGIS, GDAL and rasterio.

NetCDF

CF-1.8 NetCDF-4 with a score variable on lat × lon axes (ascending latitude). Works with xarray, Panoply and most weather tools.

Map graphics

The postable Lower 48 graphic as a 4000 × 2250 JPEG, with and without city labels. State and region versions can be downloaded from the forecast page.

Grade breaks

F < 24 · D− 24 · D 30 · D+ 36 · C− 42 · C 48 · C+ 54 · B− 60 · B 66 · B+ 72 · A− 78 · A 84 · A+ 90.

Update schedule

New files post with each forecast: the sunrise outlook at 7 PM CT, and sunset outlooks at 10 AM and 4 PM CT. Files are replaced each cycle. Past cycles aren't archived yet, so save anything you need to keep.

License

All SkyGrade data is licensed Creative Commons Attribution 4.0 International (CC BY 4.0). Credit "Forecast: SkyGrade (skygrade.io)". See how to credit for details. Please download files rather than scraping the site.