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Horn Lake, MS

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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: Horn Lake does not have its own EPA monitor; this page relies on the nearest monitor in Memphis, 13.4 miles away.
📍 Homebuyer Guide 📊 Data Coverage: 99.7% 📅 2021-2025 Trends

Horn Lake, MS air quality summary: Horn Lake, MS has a clean air score of 52.8 and a grade of D, with an annual PM2.5 mean of 11 µg/m³. These metrics point to significant long-term particulate exposure challenges in the area. Horn Lake recorded an annual PM2.5 mean of 11 µg/m³, which is considered moderate but relevant for long-term exposure. Long-term air quality in Horn Lake has been worsening over recent years.

Clean Air Score

53
Grade D

The clean air score of 52.8 and grade of D indicate that Horn Lake faces persistent air quality issues. These levels are higher than those found in many other parts of the country.

🏡 What This Means for Buying

Potential residents should weigh Horn Lake's air quality as a factor in their long-term housing decisions. Evaluation of environmental data is recommended for a comprehensive relocation strategy.

Best time for outdoor visits: Check seasonal chart

Indoor Air Quality in Horn Lake, MS

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 Horn Lake.

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 Horn Lake:

  • 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 Horn Lake Homes:

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

🩺 My Health Risk Assessment

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

Current Risk Level
High Risk
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💡

Health Advice

Reduce prolonged outdoor exertion.

Est. Annual "Risky Days" for you: ~1 days/year

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🏡 Property Value Impact Analysis

Estimated Impact (5-Year)
Concern Signal
-8.4% theoretical value retention

Between 2019 and 2024, Horn Lake's air quality worsened by 2.1 μg/m³. Based on NBER studies, this change correlates with a estimated 8.4% 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
11 μg/m³
WHO Target: <5.0
Good Days
99.7 %
% days AQI < 100
5-Year Trend
Worsening
↓ Worsening
Long-term direction
Extreme Days
0 days/yr
Days AQI > 150 (Est.)

Why Horn Lake earned a 52.8

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

See full formula
Annual Air Quality
11 μg/m³
Component score 13.8 × 40% = 5.5 points
Unhealthy Days
1 days/yr est.
0.3% of days above AQI 100. Component score 94.5 × 25% = 23.6 points
5-Year Trend
Worsening
Component score 39.5 × 20% = 7.9 points
Seasonal Variability
86
Higher means steadier month-to-month air. Weighted contribution: 8.6 points
Extreme Events
100
Captures severe pollution spikes. Weighted contribution: 5.0 points
Coverage & Monitoring
99.7%
Proxy monitor: Memphis (13.4 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% 13.8
Unhealthy Days 25% 94.5
5-Year Trend 20% 39.5
Seasonal Variability 10% 86
Extreme Events 5% 100

Explore More Air Quality Data

View more cities in MS See how Horn Lake 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.

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Similar Rankings Nationwide

#2530 Collierville, TN
Score: 52.8/100
#2531 Germantown, TN
Score: 52.8/100
#2532 Olive Branch, MS
Score: 52.8/100
#2533 West Memphis, AR
Score: 52.8/100
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#2535 Birmingham, AL
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Horn Lake Air Quality FAQs

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

Horn Lake may be a challenging fit for those prioritizing pristine air quality, as shown by its score of 52.8 and grade of D. The annual PM2.5 mean of 11 µg/m³ is a relevant metric for long-term planning.

How frequent is unhealthy air in Horn Lake?

Unhealthy air days in Horn Lake occur approximately 0.3% of the time, contributing to its grade of D. This reflects occasional pollution spikes despite the moderate annual PM2.5 mean of 11 µg/m³.

Is air quality in Horn Lake improving or getting worse over time?

Air quality in Horn Lake has been worsening over recent years.

Does air quality vary across different parts of Horn Lake?

Air quality can vary within Horn Lake due to local traffic, industry, and location patterns.