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Methuen, MA

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Long-term air quality

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.

Jump to indoor air guidance Read the formula
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Note: Methuen does not have its own EPA monitor; this page relies on the nearest monitor in Lynn, 21.7 miles away.
📍 Homebuyer Guide 📊 Data Coverage: 100% 📅 2021-2025 Trends

Methuen, MA air quality summary: Methuen, MA, holds a clean air score of 55.4 and a grade of C. The city reports an annual PM2.5 mean of 8.8, reflecting moderate long-term air quality conditions. Methuen records an annual PM2.5 mean of 8.8, which is considered moderate for long-term particulate exposure. Long-term air quality in Methuen has been worsening over recent years.

Clean Air Score

55
Grade C

A clean air score of 55.4 and a grade of C indicate that Methuen experiences moderate air quality challenges. These metrics reflect a environment where particulate levels are stable but higher than optimal standards.

🏡 What This Means for Buying

Prospective residents should evaluate the local air quality as a moderate factor in their long-term housing decisions. The C grade indicates a stable but less-than-ideal atmospheric environment.

Best time for outdoor visits: Check seasonal chart

Indoor Air Quality in Methuen, MA

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

How to react when today's AQI changes

Use the AQI bands below to decide whether to open windows, run an air purifier, or stay indoors when pollution spikes in Methuen.

AQI 0-50

Good

Open windows: Open windows if you want fresh air.

Air purifier: No purifier needed for most homes.

Indoor activity: Normal indoor activity is fine.

AQI 51-100

Moderate

Open windows: Sensitive groups should limit open-window time.

Air purifier: Use fans or filtration if dust or pollen is bothering you.

Indoor activity: Most people can stay active indoors.

AQI 101-150

Unhealthy for Sensitive Groups

Open windows: Keep windows closed.

Air purifier: Run a HEPA purifier in the main room and bedroom.

Indoor activity: Sensitive groups should reduce outdoor exposure.

AQI 151+

Unhealthy

Open windows: Keep windows and doors closed.

Air purifier: Run HEPA continuously and seal obvious drafts.

Indoor activity: Stay indoors as much as possible; use an N95 if you must go out.

Common indoor air concerns in Methuen:

  • Seasonal pollen and dust mite allergens
  • VOCs from household products

Recommended action: If today's AQI reaches 101 or higher, close windows and run HEPA filtration before indoor air starts to feel smoky or stale.

Top Products for Methuen Homes:

Best HEPA Air Purifier for Methuen Wildfire Smoke PM2.5 Indoor Air Quality Monitor Formaldehyde & VOC Detector
People also search: "indoor air quality in Methuen, MA"

🩺 My Health Risk Assessment

See how Methuen's air quality affects you and your family specifically.

Current Risk Level
Moderate Risk
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💡

Health Advice

Good for most outdoor activities.

Est. Annual "Risky Days" for you: ~4 days/year

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🏡 Property Value Impact Analysis

Estimated Impact (5-Year)
Concern Signal
-8.8% theoretical value retention

Between 2019 and 2024, Methuen's air quality worsened by 2.2 μg/m³. Based on NBER studies, this change correlates with a estimated 8.8% decrease in relative property value retention.

* Methodology: Comparison based on National Bureau of Economic Research (NBER) Working Paper 15655 correlation between PM2.5 reduction and housing prices. This is a theoretical estimate for informational purposes only.
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Annual PM2.5
8.8 μg/m³
WHO Target: <5.0
Good Days
98.9 %
% days AQI < 100
5-Year Trend
Worsening
↓ Worsening
Long-term direction
Extreme Days
4 days/yr
Days AQI > 150 (Est.)

Why Methuen earned a 55.4

Raw inputs, scoring weights, and data coverage for this city.

See full formula
Annual Air Quality
8.8 μg/m³
Component score 45.5 × 40% = 18.2 points
Unhealthy Days
4 days/yr est.
1.1% of days above AQI 100. Component score 78.1 × 25% = 19.5 points
5-Year Trend
Worsening
Component score 39 × 20% = 7.8 points
Seasonal Variability
37.3
Higher means steadier month-to-month air. Weighted contribution: 3.7 points
Extreme Events
80
Captures severe pollution spikes. Weighted contribution: 4.0 points
Coverage & Monitoring
100%
Proxy monitor: Lynn (21.7 miles away)
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Best Time to Run

Find the cleanest hours for your run today.
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Cycling Forecast

Avoid pollution spikes on your next ride.

📅 Past 30 Days Trend

Real-time daily PM2.5 AQI

Live Data

Score Breakdown

Component Weight Score Contribution
Annual Air Quality 40% 45.5
Unhealthy Days 25% 78.1
5-Year Trend 20% 39
Seasonal Variability 10% 37.3
Extreme Events 5% 80

Explore More Air Quality Data

View more cities in MA See how Methuen compares nationally

Frequently Asked Questions

How often is this air quality data updated? Our historical trend models and annual rankings are updated regularly based on official EPA data to ensure reports reflect the latest available long-term trends.
What sources does CleanAirData use? We rely strictly on official U.S. Environmental Protection Agency (EPA) monitoring station data for all historical air quality scoring and reports.
Data sourced from U.S. Environmental Protection Agency (EPA) — See our methodology

About This Data

Data Sources

Historical air quality mapping and scoring are based completely on official U.S. Environmental Protection Agency (EPA) AirNow API data. 5-day AQI forecasts are provided by WAQI.

Methodology

Our Clean Air Score (0-100) is a proprietary algorithm that weighs multiple factors:

  • Annual PM2.5 averages (40%)
  • Frequency of unhealthy days (25%)
  • 5-year pollution trends (20%)
  • Seasonal variability and extreme events (15%)

Updates & Accuracy

Real-time data is updated hourly. Historical aggregate scores are recalculated monthly to reflect the latest trends. While we strive for accuracy, sensor maintenance and local conditions can affect individual readings.

Practical Advice

When AQI > 100: Sensitive groups (children, elderly, asthmatics) should limit prolonged outdoor exertion.
When AQI > 150: Everyone should avoid outdoor exercise and keep windows closed.

Data provided for informational purposes only. Always consult local health officials during extreme smoke or pollution events.

More Cities in MA

Chicopee Grade A
Score: 89.3/100
North Chicopee Grade A
Score: 89.3/100
Westfield Grade A
Score: 89.3/100
Holyoke Grade A
Score: 89.3/100
Amherst Grade A
Score: 89.3/100
Northampton Grade A
Score: 89.3/100

Similar Rankings Nationwide

#2491 Haverhill, MA
Score: 55.4/100
#2492 Peabody, MA
Score: 55.4/100
#2493 South Peabody, MA
Score: 55.4/100
#2494 Salem, MA
Score: 55.4/100
#2495 Beverly, MA
Score: 55.4/100
#2496 Beverly Cove, MA
Score: 55.4/100

Methuen Air Quality FAQs

Is Methuen a good fit for people who care about long-term air quality?

Methuen offers moderate conditions, with a clean air score of 55.4 and a grade of C. The annual PM2.5 mean of 8.8 suggests a generally acceptable but not optimal long-term environment.

What is the frequency of unhealthy air in Methuen?

Methuen reports unhealthy air on 1.1% of days, which is a relevant factor for long-term health planning. This frequency is consistent with its C grade and moderate particulate levels.

Is air quality in Methuen improving or getting worse over time?

Air quality in Methuen is currently worsening. Data from recent years indicates a trend toward higher particulate concentrations.

Does air quality vary within Methuen?

Air quality can vary within the city due to local traffic, industry, and location patterns. Residents should be aware that particulate levels may differ across various areas.