High temperatures expected today: Upper 60s to mid 70s coast and valleys, upper 40s and 50s mountains, lower to mid 60s High Desert, and 70s low desert.
Data Courtesy of San Diego Weather Forecast Office
Evaporative Cooler Effectiveness by City
Thousand Palms
Outside Temp78°F
Dew Point45°F
Est. Output63°F
Updated: Oct 13, 2:21 PM PDT
Palm Desert (Hwy 111 & El Paseo)
Outside Temp77°F
Dew Point48°F
Est. Output63°F
Updated: Oct 13, 2:20 PM PDT
Palm Springs Airport
Outside Temp74°F
Dew Point41°F
Est. Output60°F
Updated: Oct 13, 1:53 PM PDT
It's already a comfortable 74°F outside — running the cooler isn't needed.
Estimated output is 60°F — air may come out uncomfortably cool.
Thermal Airport
Outside Temp77°F
Dew Point42°F
Est. Output62°F
Updated: Oct 13, 1:52 PM PDT
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)
