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Quincy air quality.

Air quality observations and historical context for Quincy, MA

Historical perspective

The longer view.

Annual PM2.5 concentrations · µg/m³

Regional reference: Weymouth (3.9 miles away). These historical values are inherited from that location, not measured in Quincy.

Historical annual PM2.5 concentrations 0.03.67.2 2020: 7.2 µg/m³20202021: 6.5 µg/m³20212022: 5.6 µg/m³20222023: 6.7 µg/m³20232024: 5.1 µg/m³2024
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Annual PM2.5 · µg/m³
YearPM2.5
20207.2
20216.5
20225.6
20236.7
20245.1
Historical score88.6/100
Annual mean PM2.55.1 µg/m³

Available history: 2020–2024. Historical scores are distinct from current AQI and do not describe today’s conditions.

Sources and scoring method ↗

Local context

What this page tells you

This page combines annual PM2.5, unhealthy days, 5-year trend, and data coverage so you can compare long-term air quality, not just today's reading.

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88.6
Clean Air Score
Quincy Long-term Air Quality
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Regional Air Quality Context & Seasonal Patterns

Quincy is treated as a local community in MA, so the most useful signal is the long-term pollution baseline rather than a single live AQI reading. Annual PM2.5 averages 5.1 ug/m3, with roughly 0 unhealthy-air days per year, and the multi-year trend is improving. Its Clean Air Score is 88.6 (grade A), which helps compare Quincy with other MA cities. In Quincy, historical EPA observations show that pollution levels typically peak in August (averaging an index of 40), while the cleanest air conditions occur in March (averaging 20). With an extreme events rating of 100/100, Quincy exhibits resilient atmospheric ventilation with fewer multi-day smoke outliers. Because Quincy does not have its own long-running EPA station in this dataset, the report uses Weymouth about 3.9 miles away as the closest proxy monitor.

Peak Season
August Peak

Summer (Photochemical ozone & warm-season haze)

Cleanest Air Window
March

Historically lowest pollution baseline

Sensitive Groups Guidance
Sensitive groups and outdoor runners should prioritize early morning activity before midday heat and ground-level ozone accelerate.

Fine particulate matter (PM2.5) in Quincy is monitored for health safety. Long-term exposure to pollutants can lead to respiratory issues, making daily checks essential for active residents in MA.

Clean Air Getaways & Cleaner Alternatives

Looking for cleaner air near Quincy?

These destinations have significantly higher historical Clean Air Scores than Quincy (Score: 88.6).

View All Clean Air Rankings →
82 mi away +0.7 pts higher

Chicopee, MA

89.3 / 100 Clean Air Score
82 mi away +0.7 pts higher

North Chicopee, MA

89.3 / 100 Clean Air Score
90 mi away +0.7 pts higher

Westfield, MA

89.3 / 100 Clean Air Score

Indoor Air Quality in Quincy, MA

Outdoor pollution can still affect indoor air when windows are open, filtration is weak, or wildfire smoke moves in.

Complete Quincy Home AQI & Filtration Guide

Get custom room-by-room HEPA purifier sizing, seasonal PM2.5 trends, and local home sealing recommendations.

👉 Read Full Quincy Guide →
AQI 0-50: Good
Windows

Usually safe to open windows for fresh air.

Air Purifier

Air purifier is optional for most households.

Stay Indoors

Normal indoor and outdoor activity is fine.

AQI 51-100: Moderate
Windows

Ventilate selectively; sensitive groups should watch symptoms.

Air Purifier

Run HEPA filtration on low if pollen, smoke smell, or traffic exhaust is noticeable.

Stay Indoors

Most people can continue normal activity; sensitive groups should keep an eye on AQI.

AQI 101-150: Unhealthy for sensitive groups
Windows

Keep windows closed so outdoor PM2.5 does not build indoors.

Air Purifier

Run HEPA filtration in bedrooms and main living spaces.

Stay Indoors

Children, older adults, and people with asthma should reduce outdoor exertion.

AQI 151+: Unhealthy
Windows

Keep windows and doors sealed as much as practical.

Air Purifier

Run filtration continuously; use the highest comfortable fan setting.

Stay Indoors

Stay indoors when possible and consider an N95 if you must go outside.

Health Recommendations

General Public

Most people can continue outdoor activities normally. Keep an eye on changing conditions.

Sensitive Groups

Children and elderly should reduce prolonged or heavy outdoor exertion if AQI rises above 50.

Running & Outdoor Exercise Guide

Explore available hourly data before planning outdoor time in Quincy.

🏃 View Running Forecast →
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Environmental Health Dossier: Air & Tap Water in Quincy

Atmospheric fine particulate matter (PM2.5) and municipal drinking water contaminants represent the two primary involuntary daily exposures in any household. While HEPA filtration purifies indoor air, municipal tap water often contains invisible halogenated byproducts, heavy metals, or PFAS forever chemicals.

Atmospheric Exposure
Inhalation Risk

Quincy holds a historical Clean Air Score of 88.6/100. High PM2.5 requires True HEPA (H13) physical media filters without electronic ozone generation.

Hydrological Exposure
Ingestion Risk

Municipal utility compliance focuses on legal limits, not health guidelines. Verified solid-carbon or Reverse Osmosis filters target lead, chlorine byproducts, and micropollutants.

Review EPA Safe Drinking Water Information System (SDWIS) utility compliance reports.
Inspect Quincy Tap Water on WaterQ.us
Head-to-Head Benchmark

Compare Quincy Air Quality

See how Quincy’s pollution baselines and seasonal patterns compare side-by-side.

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Frequently Asked Questions about Quincy Air Quality

Is air quality in Quincy safe today?

Current air quality in Quincy is being monitored. Based on historical data, Quincy has a clean air score of 88.6. For real-time updates, check the live monitoring panel on this page.

When is air pollution highest in Quincy?

According to multi-year EPA observations, air pollution in Quincy historically peaks during August (Summer (Photochemical ozone & warm-season haze)). The cleanest air window typically occurs in March.

What should sensitive groups do during peak air pollution in Quincy?

Sensitive groups and outdoor runners should prioritize early morning activity before midday heat and ground-level ozone accelerate. Maintaining certified indoor HEPA filtration is an effective way to minimize personal exposure.

What is a dangerous AQI level?

An AQI (Air Quality Index) above 100 is considered unhealthy for sensitive groups, while levels above 150 are unhealthy for everyone. Levels above 300 are hazardous.

Should I wear a mask today in Quincy?

If the AQI in Quincy is above 150, an N95 mask is recommended for outdoor activities to filter out fine particulate matter (PM2.5).

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