El Nino Watch
How many days a year the feels-like maximum exceeds 35 °C (ERA5, 1991-2020 average). Humid tropical places score high even when the air temperature looks moderate.
Hazards
Counted from ERA5 daily feels-like (apparent) maximum temperature, averaged over 1991-2020. Feels-like uses temperature, humidity and wind, so humid heat counts more than dry heat.
Heat stress affects sleep, health (especially for older people and children), work and electricity bills for air conditioning. El Nino years add heat in Southeast Asia.
| Heat days per year | Exposure |
|---|---|
| < 5 | 0 very low |
| 5-30 | 1 low |
| 30-90 | 2 moderate |
| 90-180 | 3 high |
| >= 180 | 4 very high |
Exposure scale: 0 very low, 1 low, 2 moderate, 3 high, 4 very high. Higher = more exposed. The colour of the matrix cell follows the same scale.