Chart by Clear Sky Chart / Danko / Rahill / Environment Canada. Check the dates printed in the image; this is a short-range forecast, not a forecast for a future Perseids peak. Scroll sideways for later hours; open the full chart for hourly values and legends.
1 · Cloud CoverLook for dark blue. Compare ECMWF Cloud too, when available.
2 · TransparencyCheck for clear air, not just an absence of clouds.
3 · DarknessLook for dark hours. This row accounts for the Sun and Moon, not local light pollution.
Seeing matters much less for naked-eye meteors. Check smoke and wind too. On the coast, use satellite imagery to double-check the marine layer.
Broad-area pins are for comparison, not verified parking entrances. Check current access and overnight parking before leaving. Forecast stations may be at a different elevation from your spot.
Perseids meteor shower