Santa Ana winds will bring hot, dry conditions to the coastal basin late this week into this weekend.
Data Courtesy of San Diego Weather Forecast Office
Evaporative Cooler Effectiveness by City
Thousand Palms
Outside Temp58°F
Dew Point40°F
Est. Output50°F
Updated: Oct 14, 3:25 AM PDT
It's already a comfortable 58°F outside — running the cooler isn't needed.
Estimated output is 50°F — air may come out uncomfortably cool.
Palm Desert (Hwy 111 & El Paseo)
Outside Temp60°F
Dew Point41°F
Est. Output52°F
Updated: Oct 14, 3:23 AM PDT
It's already a comfortable 60°F outside — running the cooler isn't needed.
Estimated output is 52°F — air may come out uncomfortably cool.
Palm Springs Airport
Outside Temp64°F
Dew Point33°F
Est. Output52°F
Updated: Oct 14, 2:53 AM PDT
It's already a comfortable 64°F outside — running the cooler isn't needed.
Estimated output is 52°F — air may come out uncomfortably cool.
Thermal Airport
Outside Temp60°F
Dew Point38°F
Est. Output51°F
Updated: Oct 14, 2:52 AM PDT
It's already a comfortable 60°F outside — running the cooler isn't needed.
Estimated output is 51°F — air may come out uncomfortably cool.
How to Read This
Score
0–100, based on the wet-bulb depression — how much cooler the air could get versus the actual outside temperature. Drier air means more room to cool, so a bigger gap scores higher.
Wet-Bulb Depression
The gap between the outside (dry-bulb) temperature and the wet-bulb temperature — the coolest evaporation alone could get the air. A bigger gap means drier air and more room for the cooler to work with.
Estimated(Est.) Output
The approximate temperature of the air coming out of the cooler, estimated by cooling the outside temperature most of the way toward the wet-bulb temperature.
Efficiency
These numbers assume 80% saturation efficiency — typical for a well-maintained direct (single-stage) evaporative cooler.
Lower dew point + higher temp = better cooling
(This guide generally will work for misting systems also)