Should the pup go out right now?

AQI (Air Quality Index) rates how clean the air is on a 0 to 500 scale. Lower is better.

0 to 50 good · 51 to 100 okay for most · 101 to 150 bothers sensitive dogs and people · 151+ unhealthy for everyone.

On smoky days the number is driven by PM2.5, the tiny particles in wildfire smoke that reach deep into little lungs.

In Canada? Official warnings use the AQHI (1 to 10 scale). Roughly: AQHI 4 to 6 ≈ 51 to 100 here, and AQHI 7+ ≈ 150+ here, the "keep it short" zone.