Today’s Tick Risk in Maryland – Real-Time Forecast & Activity Map
Check your ZIP code for local tick activity, real-time risk levels, and prevention insights.
Built from CDC and NOAA data
Surveillance Insights
- Annual Lyme Cases
- ~1,500-2,000 confirmed cases annually
- Based on CDC surveillance data
- Long-Term Trend
- Stable high Lyme incidence; rising Alpha-gal cases
- Based on CDC surveillance data
- High Risk Zones
- Baltimore, Howard, Montgomery, Harford, Anne Arundel, Eastern Shore, Catoctin Mountain Park
Current Situation in Maryland
Maryland's nickname, "America in Miniature," applies to its tick risks as well. From the cool, hardwood forests of the Appalachian Mountains in the west to the humid, sandy wetlands of the Eastern Shore, the state supports a diverse and dangerous array of tick species. The tick forecast for Maryland is severe, with high rates of Lyme disease in the northern and central counties and a dominant presence of Lone Star ticks in the south and east. Maryland is a hotspot for Alpha-gal syndrome (red meat allergy) caused by Lone Star tick bites. The state's dense population corridor between Baltimore and Washington, D.C., puts millions of people in close contact with fragmented forest habitats that are ideal for tick proliferation.
Snapshot of the current tick situation in Maryland, based on regional surveillance data and seasonal activity patterns.
- Risk Level
- High
- Peak Activity
- May - July
- Dominant Vector
- Deer Tick (Ixodes scapularis)
Where Ticks Hide in Maryland
Maryland offers a spectrum of tick habitats. In Western Maryland (Garrett and Allegany counties), the terrain resembles Pennsylvania's Appalachians—deep hardwood forests with high deer tick populations. The Central region (Montgomery, Howard, Baltimore counties) is characterized by suburban sprawl intersecting with stream valleys and parklands, creating perfect "edge habitats" for deer and mice. The Eastern Shore and Southern Maryland feature coastal plain forests, marshes, and tall grasses where humidity is high—conditions that support explosive populations of Lone Star ticks. The state's extensive shoreline along the Chesapeake Bay provides a moderating climate that supports tick survival.
Seasonal Activity Pattern
Maryland has one of the longest active tick seasons in the Northeast. Nymphal deer ticks peak from May through July, but the risk never truly goes to zero. In the warmer southern and coastal regions, adult deer ticks and Lone Star ticks can be active year-round on mild days. The Lone Star tick is particularly aggressive in the late spring and summer months. Hunters, hikers, and gardeners need to be vigilant in all seasons. The "fall peak" of adult deer ticks is prolonged in Maryland compared to states further north, often extending well into December or January.
Check Your Local Tick Risk
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Local Vector Analysis
Understanding which ticks are active in Maryland helps you identify threats and take appropriate precautions.
Deer Tick / Blacklegged Tick
Ixodes scapularis
Appearance: Dark reddish-brown body with black shield on back. Adults are 3-5mm.
Peak Season: Adults: Oct-May | Nymphs: May-Aug
Habitat: Deciduous forests, shady moist areas, and leaf litter. Loves the boundary between lawns and woods.
Diseases: Lyme Disease, Anaplasmosis, Babesiosis, Powassan Virus, B. miyamotoi
Lone Star Tick
Amblyomma americanum
Appearance: Distinct white dot or "lone star" on female's back. Reddish-brown body.
Peak Season: Active from early Spring through late Fall
Habitat: Woodlands with dense undergrowth and around animal resting areas.
Diseases: Ehrlichiosis, Alpha-gal Syndrome, STARI, Heartland Virus, Bourbon Virus
Note: Aggressive hunter. Actively pursues hosts.
American Dog Tick
Dermacentor variabilis
Appearance: Brown with white/grey mottling. Ornate white patterns on shield.
Peak Season: Spring and Summer
Habitat: Grassy fields, walkways, and trails. More tolerant of dry conditions than Deer Ticks.
Diseases: Rocky Mountain Spotted Fever, Tularemia
Lyme Disease
Vector: Deer tick (Ixodes scapularis)
Lyme Disease
Lyme disease is a bacterial infection transmitted by deer ticks. If caught early, it's highly treatable with antibiotics. Left untreated, it can cause serious complications affecting joints, heart, and nervous system.
Early Warning Signs
- Erythema migrans (EM) rash - appears in 70-80% of cases
- Bullseye rash (circular red rash with clear center)
- Rash appears 3-30 days after bite
- Fever and chills
Progression & Symptoms
- Severe headaches and neck stiffness
- Facial palsy (loss of muscle tone on one or both sides of face)
- Arthritis with severe joint pain, especially knees
Prevention Strategies
The best way to avoid tick-borne diseases is to prevent tick bites in the first place. These strategies work together to create multiple layers of protection.
Permethrin-Treated Clothing
Permethrin is an insecticide that kills ticks on contact. When applied to clothing, it remains effective through multiple washes.
Daily Tick Checks
Since disease transmission typically requires 24-48 hours of attachment, finding and removing ticks quickly dramatically reduces infection risk.
Landscaping Defense
Creating a tick-hostile environment in your yard reduces the chance ticks will be waiting when you step outside.
Shower Within 2 Hours
Showering after outdoor activity gives you a chance to wash off ticks before they bite.
Tick Bite Protocol
Acting quickly and correctly is your best defense against infection.Follow these 6 critical steps.
Don't Panic
Most tick bites do not transmit disease, especially if removed quickly.
- Infection rates vary by region (20-50%)
- Transmission usually takes 24-48 hours
- Stay calm and use proper technique
Gather Tools
Use fine-tipped tweezers. Avoid fingers or chemicals.
- Fine-tipped tweezers are best
- Rubbing alcohol for cleaning
- Small container to save the tick
Grasp & Pull
Grasp close to skin and pull upward with steady pressure.
- Grab mouthparts near skin (not body)
- Pull straight up—don't twist
- Maintain steady, even pressure
Clean Area
Disinfect the bite site and your hands thoroughly.
- Wash with soap and water
- Apply rubbing alcohol
- Wash hands well
Save Tick
Keep the tick in a sealed container for potential testing.
- Seal in bag or container
- Label with date and location
- Bring to doctor if symptoms appear
Monitor (30 Days)
Watch for rash or flu-like symptoms for a month.
- Check for expanding rash daily
- Watch for fever or fatigue
- Seek care if you feel unwell
When does tick season end in Maryland?
Tick activity winds down after the first hard freeze, which in Maryland typically arrives around Oct 24. See the local first-frost window and city-by-city freeze dates.
Maryland first frost datesAlso worried about mosquitoes in Maryland?
West Nile virus, EEE, and the local mosquito season vary by state. Check your Maryland mosquito risk profile.
View Maryland mosquito forecastStay Safe in Maryland
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