Johns Creek, GA
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.
Johns Creek, GA air quality summary: Johns Creek, GA has a clean air score of 66.7 and a grade of C, with a PM2.5 annual mean of 9. This level represents moderate but relevant long-term exposure for residents. The annual mean concentration of PM2.5 in Johns Creek is recorded at 9 micrograms per cubic meter. Air quality trends in Johns Creek have remained relatively stable with limited change over time.
Clean Air Score
A clean air score of 66.7 and a C grade reflect the city's long-term atmospheric health based on established particulate standards. These metrics provide a baseline for understanding the chronic air quality conditions in Johns Creek.
🏡 What This Means for Buying
Air quality should be treated as one factor in a broader relocation or housing decision in this region. Prospective residents are encouraged to evaluate these long-term averages alongside other localized quality-of-life factors.
Indoor Air Quality in Johns Creek, GA
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 Johns Creek.
AQI 0-50
GoodOpen 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
ModerateOpen 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 GroupsOpen 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+
UnhealthyOpen 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 Johns Creek:
- 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 Johns Creek Homes:
🩺 My Health Risk Assessment
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Health Advice
Good for most outdoor activities.
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</> Create Free Widget🏡 Property Value Impact Analysis
Between 2019 and 2024, Johns Creek's air quality worsened by 0.4 μg/m³. Based on NBER studies, this change correlates with a estimated 1.6% decrease in relative property value retention.
Cleaner Alternatives in GA
Why Johns Creek earned a 66.7
Raw inputs, scoring weights, and data coverage for this city.
Best Time to Run
Find the cleanest hours for your run today.
Cycling Forecast
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📅 Past 30 Days Trend
Real-time daily PM2.5 AQI
🌸 Pollen Outlook
Current Seasonal Forecast
How it worksBased on current seasonal forecast data. Not a long-term pollution rating or relocation score.
Score Breakdown
| Component | Weight | Score Contribution |
|---|---|---|
| Annual Air Quality | 40% | 43.5 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 50 |
| Seasonal Variability | 10% | 93.4 |
| Extreme Events | 5% | 100 |
Explore More Air Quality Data
Frequently Asked Questions
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.
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Johns Creek Air Quality FAQs
Is Johns Creek a good fit for people who care about long-term air quality?
Johns Creek carries a clean air score of 66.7 and a grade of C, with an annual PM2.5 average of 9. These figures should be evaluated by those who prioritize long-term atmospheric conditions in their residential choices.
What is the frequency of unhealthy air or long-term pollution exposure in Johns Creek?
In Johns Creek, 0% of days reach unhealthy levels for sensitive groups, contributing to its overall grade of C. The PM2.5 annual mean of 9 provides a measure of consistent long-term exposure for the population.
Is air quality in Johns Creek improving or getting worse over time?
Air quality trends in Johns Creek have remained relatively stable with limited change over time.
Are there significant variations in air quality across different parts of Johns Creek?
Air quality can vary within Johns Creek due to factors like local traffic, proximity to industrial sites, and geographic patterns, even if specific neighborhood-level monitoring is not available.