40of 100

Today's score

Mosquitoes in Mason City, IA

Cerro Gordo County

Moderate risk

Mosquitoes are active, especially at dawn and dusk. Use repellent and empty any standing water around the yard.

Updated July 15, 2026

Season
Ramping up
Water/wetland
2%
Top species
Asian tiger mosquito

Right now

Latest reading
76°
Temperature
86%
Humidity
2.5"
Recent rain

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Know the evening before Mason City spikes.

7-day outlook

Risk recalculates daily from the local forecast.

Today
40
Thu
43
Fri
43
Sat
42
Sun
37
Mon
44
Tue
35

What's active right now

Floodwater and container mosquitoes are active and building toward the summer peak. Aedes vexans (the floodwater biter) surges about a week after heavy rain, and the Asian tiger mosquito is out biting during the day around homes. Early summer is when nuisance biting takes off.

Local mosquito habitat

Mosquitoes breed in standing water, so a town's risk tracks how much of that it holds. Mason City is 0% wetland and marsh, 2% open water, and 15% developed across its 27.86 sq mi, home to about 26,906 people. That makes it the 3rd-wettest of the 10 towns in Cerro Gordo County. Marshes and floodplains breed the floodwater and cattail mosquitoes; developed areas breed the house mosquito in storm-drain catch basins and backyard containers.

The single biggest thing a homeowner controls is standing water: empty anything that holds it, keep gutters clear, and change bird baths weekly. A licensed mosquito service handles the breeding sites you can't reach and treats the shady resting spots where adults wait out the day.

Mosquito control in Mason City, IA

Do I need mosquito control in Mason City?

Mosquito activity in Mason City is moderate today (40/100). Mosquitoes are out, especially at dawn and dusk and in shady, humid corners. A seasonal treatment plan keeps numbers down before peak weeks hit.

Professional mosquito control in Mason City usually pairs a barrier treatment, misted onto shrubs, tall grass, and shady borders where adults rest, with larval control that targets standing water and catch basins so new broods never hatch. Treatments are typically applied every three to four weeks through the season by a licensed company.

How much does mosquito control cost in Mason City?

Most homeowners pay about $80 to $150 per visit for professional mosquito barrier spraying, or roughly $350 to $600 for a full season of treatments, depending on lot size and how much shade and standing water the property has. Quotes are free, so it costs nothing to get a real number for your yard.

Get a free mosquito control quote

From a vetted local mosquito control company serving Mason City. No cost, no obligation.

Are mosquitoes bad in Mason City right now?

Floodwater and container mosquitoes are active and building toward the summer peak. In Mason City, today's mosquito risk reads moderate (40/100). Mosquitoes are active, especially at dawn and dusk. Use repellent and empty any standing water around the yard.

Nearby towns

Mosquito pressure is local. Check the towns around you.