Cheyenne, WY
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.
Cheyenne, WY air quality summary: Cheyenne, WY, has a clean air score of 89.1 and a grade of A. The city's annual PM2.5 mean is 3.8, indicating relatively low long-term particulate exposure. Cheyenne records a PM2.5 annual mean of 3.8, which is considered relatively low long-term particulate exposure. The long-term air quality in Cheyenne has been worsening over recent years.
Clean Air Score
The clean air score of 89.1 and grade of A reflect high-quality atmospheric conditions over the long term. These metrics indicate that Cheyenne consistently maintains air quality levels well within acceptable standards.
🏡 What This Means for Buying
Potential residents can view Cheyenne's air quality as a favorable factor in a long-term housing evaluation. The data provides a historical context of low particulate levels for long-term living.
Indoor Air Quality in Cheyenne, WY
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 Cheyenne.
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 Cheyenne:
- 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 Cheyenne Homes:
🩺 My Health Risk Assessment
See how Cheyenne's air quality affects you and your family specifically.
Health Advice
Enjoy the outdoors! Air quality is great.
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</> Create Free Widget🏡 Property Value Impact Analysis
Between 2019 and 2024, Cheyenne's air quality worsened by 0.7 μg/m³. Based on NBER studies, this change correlates with a estimated 2.8% decrease in relative property value retention.
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Why Cheyenne earned a 89.1
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% | 100 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 46.5 |
| Seasonal Variability | 10% | 91.3 |
| 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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Cheyenne Air Quality FAQs
Is Cheyenne a good fit for people who care about long-term air quality?
Cheyenne holds a clean air score of 89.1 and a grade of A, with an annual PM2.5 mean of 3.8. these metrics suggest a very high level of long-term air quality compared to many other areas.
What is the frequency of unhealthy air or long-term pollution exposure in Cheyenne?
Cheyenne records 0 percent of days with unhealthy air, which is consistent with its grade of A. This indicates that long-term exposure is predominantly shaped by its low annual mean of 3.8.
Is air quality in Cheyenne improving or getting worse over time?
Long-term air quality in Cheyenne has been worsening over recent years. This assessment is based on a data completeness rate of 99.7 percent.
Does air quality vary within different parts of Cheyenne?
Air quality can vary within neighborhoods due to local factors such as traffic patterns or regional terrain, though overall city levels remain within the reported range. Residents can look to neighborhood or ZIP-level detail for more localized information.