Why Los Angeles County Mosquito Activity Is Elevated in 2026

How Humidity and Warm Weather Help Mosquitoes Persist

The temperatures and weather patterns within Los Angeles County have increased the pressure from local mosquitoes. Because of their tiny size, mosquitoes need conditions that help to reduce the drying effects of the sun. Within residential areas, this can include backyard spaces where garden beds, leaf litter, and mature trees provide ideal shade and cooler temperatures.

Unfortunately, with the record-breaking humidity and temperatures within Los Angeles this year, the mosquito population has more areas where they can thrive. As a result, numbers have been increasing and the spread of West Nile virus has increased along with it. In a September 22, 2026 report, the Los Angeles Times described this as one of the more severe West Nile virus seasons in recent memory.

What the 2026 West Nile Numbers Mean for Residents

As of September 22, 2026, Los Angeles County had reported 100 West Nile virus cases and five deaths. For all of 2025, the county recorded 22 cases and two deaths. This information is meant to inform residents of the risks of West Nile virus exposure, and encourage residents to take steps to reduce mosquito activity around their homes. 

Prolonged humidity and heat can create conditions that support mosquito activity across the county, but it doesn’t automatically mean that every mosquito is carrying West Nile virus.

Reduce Standing Water and Mosquito Habitat at Home

While the news may create cause for concern, there are steps you can take to reduce mosquito activity at your Los Angeles home. To begin, it’s important to address both the resting areas and the breeding areas. Mosquitoes will rest within tall grasses, dense vegetation, and areas where leaf litter or dampness provide access to cool shade or humidity.

Ensure the lawn is trimmed low, ensure perimeter areas are addressed, and reduce the amount of leaf litter or brush found around the home. For breeding, ensure standing water is dumped on a regular basis. Clear leaf litter from clogged gutters and downspouts in order to promote proper drainage, take note of areas where leaky irrigation or pipes need repair, and dump water from overlooked containers such as children’s toys or flower pots.

How Professional Mosquito Control Fits In

Professional mosquito control services in Los Angeles can help to strengthen the preventative measures that residents take. Each of our plans at Mosquito Squad of Los Angeles begins with a thorough property inspection in order to learn the layout, inspect areas of mosquito activity, and note areas of concern. This allows us to help create a tailored mosquito control plan that suits your home and needs. 

Our Barrier Treatment Plus package is designed to reduce and control mosquitoes for up to 21 days at a time. This potent insecticide will be used in targeted areas to create a barrier of defense that repels mosquito activity and disrupts the cycle of breeding. Your technician can explain how rainfall and watering may affect the treatment schedule. Additionally, our plans are designed to run on a recurring basis to provide ongoing mosquito control during the treatment season.

Get Mosquito Control Help From Mosquito Squad of Los Angeles

If your Los Angeles home is experiencing the effects of mosquito pressure, our team is here to help. Through comprehensive mosquito control offerings and recurring treatment plans, we can help to reduce and control the mosquito population at your home for up to 21 days at a time.

Call (818) 350-8870 or request a free quote online to learn more.