As summer arrives in Idaho, so do a series of seasonal health hazards. With the first heat-related deaths of the year already reported this June, and with temps forecasted to be in the upper 90s and possibly 100s this week, it’s a critical time to talk about how to stay safe in rising temperatures, around water, and during wildfire season.
Heat-related illness: know the warning signs
Heatstroke is the most serious heat-related illness. It can develop quickly, especially in high temperatures with little shade or hydration. Symptoms include a high body temperature, confusion, dizziness, red or hot skin, and fainting. This is a medical emergency—call 911, move the person to a cooler place, and cool them with wet cloths or a cold bath.
Heat exhaustion may come first, with signs like fatigue, muscle cramps, nausea, and clammy skin. Resting in a cool place, drinking water, and using cold cloths can help.
To stay safe in the heat:
- Drink water often—don’t wait until you’re thirsty.
- Avoid outdoor activity during the hottest part of the day.
- Wear lightweight clothing, sunscreen, and a wide-brimmed hat.
- Take frequent breaks in the shade or indoors.
Harmful algal blooms: hidden water hazards
Summer also brings peak conditions for cyanobacterial harmful algal blooms (cyanoHABs), also known as blue-green algae. Cyanobacteria are naturally found in water but can produce dangerous toxins under the right conditions—especially warm, still water.
Swallowing or swimming in affected water can cause stomach pain, nausea, vomiting, and skin or eye irritation. Pets, livestock, and wildlife are particularly vulnerable because they’re more likely to swim in or drink contaminated water. If your pet is exposed, wash them immediately with clean water and soap, and contact a veterinarian.
Watch for water that looks or smells suspicious. Blooms may resemble pea soup, spilled paint, green mats, or foamy scum, and may have a foul odor. Follow these tips to protect yourself and your pets:
When in doubt, stay out—and keep pets and livestock out, too. Never drink or cook with water that could contain a bloom—boiling or filtering won’t remove the toxins.
To report a suspected bloom, call (866) 671-5385 or email algae@deq.idaho.gov.
Be ready for wildfire smoke
As wildfire season begins, air quality can quickly worsen due to drifting smoke. Even healthy people can experience symptoms like coughing and shortness of breath. On smoky days, limit time outdoors, avoid vigorous activity, and check for current smoke information: https://idsmoke.blogspot.com/.
A safe summer starts with awareness
Idaho summers are a great time to enjoy a variety of outdoor activities. With some preparation and smart choices, we can reduce our risk and protect our families, pets, and communities from preventable summer health threats.
Dr. Kathryn Turner is deputy state epidemiologist in the Division of Public Health.
The Idaho Department of Health and Welfare is dedicated to strengthening the health, safety, and independence of Idahoans. Learn more at healthandwelfare.idaho.gov.
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