TickZoneHow the score works
43of 100

Today's tick risk

Ayer, MA

Middlesex County

Moderate risk

Ticks are active. Use repellent, stick to trails, and do a tick check when you come inside.

Updated June 30, 2026

Right now
73°F · 83%
Life stage
Nymphs
Sightings
14 · 15mi

7-day outlook

Risk recalculates daily from the local forecast.

Today
43
Wed
39
Thu
30
Fri
28
Sat
39
Sun
50
Mon
49

What's active right now

Nymphs are questing, the highest-risk stage for people. Nymphal deer ticks peak in late spring and summer. They're the size of a poppy seed, easy to miss, and cause most Lyme transmission.

Recent tick sightings

Within ~15 mi · last 30 days

14
observations logged nearby (iNaturalist)
  • Dermacentor variabilisJun 29
  • Ixodes scapularisJun 27
  • Dermacentor variabilisJun 26
  • Dermacentor variabilisJun 25
  • Dermacentor variabilisJun 25
  • Dermacentor variabilisJun 20

Local tick habitat

Ayer is 57% natural land cover (43% forest, plus open and brushy areas) across its 8.95 sq mi. 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.

Is it tick season in Ayer right now?

Yes. Nymphs are questing, the highest-risk stage for people. In Ayer, today's risk reads moderate (43/100). Ticks are active. Use repellent, stick to trails, and do a tick check when you come inside.

Nearby towns in Middlesex County

Tick risk is local. Check the towns around you.

Get Ayer's tick risk on your home screen

The TickZone app (coming soon) adds a color widget and daily alerts.

Join the waitlist