Why does 30°C feel fine in Lethbridge and sticky in Toronto? It's the dew point: how much moisture is actually in the air. Set the temperature and humidity to see it.
| Dew point | How it feels |
|---|
Relative humidity changes all day as the temperature rises and falls, but the dew point stays much steadier, so it's the better number for comfort. Humidex is Environment Canada's measure of how hot and humid weather feels; it's only shown at 20°C and above. Example days are typical values, not real readings.