Health

Calgary's Sneaky Summer: What You Need to Know About Mosquitoes and Ticks

2025-07-03

Author: Sophie

Calgarians hoping for a mosquito-free summer might be in for a surprise. Despite the hot, dry conditions this season, some pesky mosquitoes are still buzzing around, and they come with health risks.

According to entomologist Taz Stuart, last summer saw a spike in mosquito activity during a rain-laden July. This year, while overall mosquito numbers seem lower nationwide, certain species that thrive in warm, dry weather still pose a threat.

"Mosquito populations may be down, but the danger isn't gone. Some species, especially those that can transmit West Nile virus, are out there," warns Stuart. In Calgary, the Culex group, including Culex tarsalis, Culex restuans, and Culex territans, are the main culprits.

Particularly insidious is the Tarsalis mosquito, which prefers to bite on ankles and wrists, making its presence known only after you've been bitten. This stealthy mosquito may not draw immediate attention, but its potential to transmit deadly diseases is no laughing matter.

To safeguard against these uninvited summer guests, prevention is key. Mosquitoes love to breed in stagnant water, especially if it’s rich in organic matter. Your backyard birdbath? A potential breeding ground. Clogged gutters? Another hotspot. Even those forgotten rain barrels can create the perfect home for these insects.

Stuart suggests eliminating any standing water in your vicinity: "Dump it, drain it, fill it, or cover it. Just because it’s hot and dry doesn’t mean there aren't mosquitoes out there."

When heading outdoors, especially during dawn and dusk, it’s wise to use insect repellent. Products containing DEET are particularly effective, disrupting mosquitoes’ ability to detect human scent. Picaridin is another great option, though typically found in lower concentrations.

But don’t let your guard down! Ticks are also on the rise in the region, adding another layer of concern for outdoor enthusiasts this season. Prepare yourself and stay informed to safely enjoy the great outdoors!