Heat & Health
Everything filed under heat & health.
Heat & Health10 min readHow much water to drink in Phoenix heatNWS Phoenix publishes 2 litres a day indoors and 1 to 2 litres an hour outdoors. What the health agencies say about water, salt and timing, and where they leave a gap.Heat & Health9 min readIs the ground too hot for dog paws in Phoenix?Pavement in Phoenix has been measured at 155 °F while the air was 105 °F, and concrete in shade came in below the air. What the agencies publish, and what they do not.Heat & Health8 min readHeat exhaustion or heat stroke: how to tell them apartThe two conditions arrive on the same Phoenix afternoon and are not the same emergency. What the CDC’s symptom list actually says, and why sweating is a poor test.Heat & Health10 min readHeat safety for outdoor work in a Phoenix summerWhat the normal Phoenix day does hour by hour, and how the official guidance shapes a work schedule around it, in a month whose coolest hour is 86 °F.Heat & Health10 min readPhoenix trail heat rules, and what they closeOn an Extreme Heat Warning day, Phoenix closes named trail segments at Camelback, Piestewa Peak and South Mountain from 8 a.m. to 5 p.m. See what is restricted and what is not.Heat & Health8 min readHow fast a parked car gets hot in PhoenixThe measured rate a closed car heats, minute by minute, and what a normal Phoenix July afternoon does to it. Nearly all of the rise is done in the first half hour.Heat & Health9 min readHow hot Phoenix gets, month by monthThe Phoenix year in normal temperatures, from a January afternoon at 68 °F to a July high of 106.5 °F, with the months that are genuinely lost to heat.Heat & Health10 min readDew point, humidity, and what the heat index means hereThe heat index is the number people check before going outside. In Phoenix it sits at or below the air temperature every hour of the normal year, and that changes what it is for.Heat & Health8 min readPlanning an outdoor event in a Phoenix summerHow often a Phoenix date has actually reached 100 °F, month by month, and how to turn those odds into a date, a start time and a fallback that holds up.Heat & Health9 min readThe hundred-degree day count, and what it measuresA normal Phoenix year has 111.3 days at or above 100 °F. Where they fall, how the count accumulates month by month, and what the number does and does not measure.Heat & Health10 min readWho a Phoenix summer hits hardestA Phoenix summer runs 111 days above 100 °F, but the deaths it causes do not track the temperature. County records show where the heat actually lands, and who the agencies name.Heat & Health9 min readWhy Phoenix nights stay hotA normal July night at Sky Harbor bottoms out at 85.6 °F and spends 17 of 24 hours above 90. The daily swing is the same as January’s; only the level moves, and it moves 38 °F.