EPA ACTIVE WATCH Western US & Intermountain Basins: Wildfire Smoke & Elevated PM2.5 Infiltration

Aberdeen air quality.

Air quality observations and historical context for Aberdeen, SD

Historical perspective

The longer view.

Annual PM2.5 concentrations · µg/m³

Historical annual PM2.5 concentrations 0.03.67.2 2019: 5.8 µg/m³20192020: 5.6 µg/m³20202021: 6.7 µg/m³20212022: 4.2 µg/m³20222023: 7.2 µg/m³20232024: 5.3 µg/m³2024
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Annual PM2.5 · µg/m³
YearPM2.5
20195.8
20205.6
20216.7
20224.2
20237.2
20245.3
Historical score86.1/100
Annual mean PM2.55.3 µg/m³

Available history: 2019–2024. 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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86.1
Clean Air Score
Aberdeen Long-term Air Quality
Based on EPA 5-year data · Loading live AQI...
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Regional Air Quality Context & Seasonal Patterns

Aberdeen is treated as a local community in SD, so the most useful signal is the long-term pollution baseline rather than a single live AQI reading. Annual PM2.5 averages 5.3 ug/m3, with roughly 1 unhealthy-air days per year, and the multi-year trend is relatively stable. Its Clean Air Score is 86.1 (grade A), which helps compare Aberdeen with other SD cities. In Aberdeen, historical EPA observations show that pollution levels typically peak in October (averaging an index of 39), while the cleanest air conditions occur in June (averaging 8). With an extreme events rating of 100/100, Aberdeen exhibits resilient atmospheric ventilation with fewer multi-day smoke outliers. This report uses direct city-level monitor coverage where available, so the trend is tied closely to conditions in Aberdeen.

Peak Season
October Peak

Autumn (Wildfire smoke drift & air stagnation)

Cleanest Air Window
June

Historically lowest pollution baseline

Sensitive Groups Guidance
Monitor real-time hourly spikes and verify indoor HEPA filtration during seasonal transitions.

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

Clean Air Getaways & Cleaner Alternatives

Looking for cleaner air near Aberdeen?

These destinations have significantly higher historical Clean Air Scores than Aberdeen (Score: 86.1).

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119 mi away +3 pts higher

Pierre, SD

89.1 / 100 Clean Air Score
159 mi away +1.1 pts higher

Sioux Falls, SD

87.2 / 100 Clean Air Score
3651 mi away +3.6 pts higher

Hilo, HI

89.7 / 100 Clean Air Score

Indoor Air Quality in Aberdeen, SD

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

Complete Aberdeen Home AQI & Filtration Guide

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

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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 Aberdeen.

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

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

Aberdeen holds a historical Clean Air Score of 86.1/100. 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 Aberdeen Tap Water on WaterQ.us
Head-to-Head Benchmark

Compare Aberdeen Air Quality

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

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Frequently Asked Questions about Aberdeen Air Quality

Is air quality in Aberdeen safe today?

Current air quality in Aberdeen is being monitored. Based on historical data, Aberdeen has a clean air score of 86.1. For real-time updates, check the live monitoring panel on this page.

When is air pollution highest in Aberdeen?

According to multi-year EPA observations, air pollution in Aberdeen historically peaks during October (Autumn (Wildfire smoke drift & air stagnation)). The cleanest air window typically occurs in June.

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

Monitor real-time hourly spikes and verify indoor HEPA filtration during seasonal transitions. 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 Aberdeen?

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

Higher historical scores in SD

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