Shirley, MA Pollen Calendar

Today in Shirley

Monday, July 27, 2026

The Shirley Pollen Calendar, Month by Month

Each month is rated from Low to Very High, with the allergen that usually drives it. The current month is outlined.

What's Active in July

These allergens are usually in the air around Shirley this month:

The Worst and Best Months in Shirley

Shirley's pollen usually peaks in September, driven by Ragweed. If your allergies flare on the same weeks every year, that is usually why. The calmest month is typically January.

Massachusetts has a spring tree season and a strong ragweed season in late summer and early fall.

A pollen calendar shows the usual pattern, but weather shifts it. A warm winter pulls tree season earlier, and a late frost stretches ragweed into November. Start any allergy medication a week or two before your worst month, and check the daily count to catch the spikes. If symptoms hit hard every season, an allergist in Massachusetts can help with testing and longer-term options like allergy shots.

Keep Track of Pollen in Shirley

The calendar tells you what to expect. Your daily report tells you what's actually happening:

• Shirley pollen count today — live tree, grass, and weed levels with a 5-day forecast.
• Shirley air quality — today's AQI and the pollutants behind it.
• Massachusetts pollen season — the statewide calendar and other cities.
• Today's worst pollen cities — see where Shirley ranks right now.

Get Shirley pollen alerts

We send a free email whenever pollen is High or Very High in Shirley. No spam, no daily emails when pollen is low. Just a heads-up on the days that matter.