Summer Simmer Index Calculator
CALCULATE
CALCULATE
Summer simmer index (SSI) calculator to find the combined effect of temperature & humidity. The SSI value shows how hot the climate due to temperature and humidity. To find the summer simmer index, users can utilize the above formula for paperwork calculation, whereas for quick calculation, users can use this summer simmer index calculator with the known input values of temperature & relative humidity.
Formula for Summer Simmer Index
SSI = 1.98(T– (0.55 – 0.0055(RH))(T-58)) – 56.83
where
SSI → Summer Simmer Index
T → Temperature in Fahrenheit
RH → Relative Humidity
Summer simmer Index Table
| Range | Classification |
|---|---|
| SSI < 70 | Cool |
| 70 <= SSI < 77 | Moderately Cool |
| 77 <= SSI < 83 | Comfortable |
| 83 <= SSI < 91 | Moderately Warm |
| 91 <= SSI < 100 | Warm |
| 100 <= SSI < 112 | 112Very Warm |
| 112 <= SSI < 125 | Extremely Warm |
| 125 <= SSI < 150 | Dangerously Warm |
| SSI > 150 | Life Threatening |