27of 100

Today's score

Ticks in Chicago, IL

Cook County

Low risk

Tick activity is low right now, but never zero. A quick check after time outdoors is still worth it.

Updated July 11, 2026

Life stage
Nymphs & adults
Forest
15%
Tick species
4 of 5 here

Right now

Latest reading
79°
Temperature
68%
Humidity
0.0"
Recent rain

TickZone for iPhone · launching soon

Quiet in Chicago today. Know the evening before that changes.

7-day outlook

Risk recalculates daily from the local forecast.

Today
27
Sun
27
Mon
27
Tue
26
Wed
24
Thu
26
Fri
27
Sat
23
Sun
21
Mon
19
Tue
16
Wed
14
Thu
14
Fri
17

What's active right now

Deer-tick nymphs are at their peak alongside dog-tick adults. Midsummer is the busiest stretch: nymphal deer ticks peak in the woods while American dog-tick adults are active in grass and along trails.

Local tick habitat

Chicago is 23% natural land cover (15% forest, plus open and brushy areas) across its 227.75 sq mi, home to about 2,664,452 people. That makes it the 105th-most wooded of the 119 towns in Cook County. Deer ticks live in wooded areas, along trail edges, and in tall grass: the more of that a town has, the more places ticks can quest.

Cook County reports about 2 Lyme cases per 100,000 people a year, the 0th-highest of 0 Midwest counties. That county-level disease pressure, combined with Chicago's local habitat, sets how high its daily score can climb when the weather and season allow.

Tick control in Chicago, IL

Do I need tick control in Chicago?

Today's risk in Chicago is low (27/100), so there is no urgency. Quiet stretches are actually a good time to book: pros apply barrier treatments before activity climbs, and spring nymph season is when most Lyme transmission happens.

Professional tick control in Chicago typically means a barrier treatment along the lawn edge, leaf litter, stone walls, and shady borders where ticks wait for a host, applied two to four times a season by a licensed pest control company. It is the single most effective way to cut tick numbers in the part of the yard your family actually uses.

How much does tick control cost in Chicago?

Most homeowners pay about $100 to $200 per visit for professional tick spraying, or roughly $350 to $600 for a full season of barrier treatments, depending on lot size and how wooded the property is. Quotes are free, so it costs nothing to get a real number for your yard.

Get a free tick control quote

From a vetted local tick exterminator serving Chicago. No cost, no obligation.

Is it tick season in Chicago right now?

Yes. Deer-tick nymphs are at their peak alongside dog-tick adults. In Chicago, today's risk reads low (27/100). Tick activity is low right now, but never zero. A quick check after time outdoors is still worth it.

Nearby towns

Tick risk is local. Check the towns around you.

Stay ahead of ticks in Chicago

The TickZone iPhone app (launching soon) alerts you the evening before Chicago's risk spikes, so protection happens before the bite.