Sierra Vista, AZ
2021 search intent
Sierra Vista air quality in 2021 — closest EPA context
People searching for Sierra Vista's 2021 air quality want a fast EPA-backed answer. This page does not publish a single "median AQI" number, but it gives the closest available context: annual PM2.5 at 10.6 μg/m³, 7 unhealthy days per year, and the multi-year trend that shows whether 2021 reflected a cleaner or riskier pattern for Sierra Vista.
Sierra Vista, AZ air quality summary: Sierra Vista, AZ has a clean air score of 45.1 and a grade of D, reflecting significant long-term air quality challenges. The city's annual mean PM2.5 concentration is 10.6 µg/m³. In Sierra Vista, the annual mean concentration of PM2.5 is 10.6 µg/m³. Long-term air quality in Sierra Vista has been worsening over recent years.
Clean Air Score
A clean air score of 45.1 and a grade of D signify that Sierra Vista experiences elevated long-term exposure to particulate matter. These ratings indicate notable environmental challenges for long-term residents.
🏡 What This Means for Buying
Prospective residents should evaluate Sierra Vista's air quality as part of their long-term housing evaluation. The city's D grade represents an elevated level of pollution exposure.
Indoor Air Quality in Sierra Vista, AZ
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 Sierra Vista.
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 Sierra Vista:
- Wildfire smoke infiltration (PM2.5)
- 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 Sierra Vista Homes:
🩺 My Health Risk Assessment
See how Sierra Vista's air quality affects you and your family specifically.
Health Advice
Reduce prolonged outdoor exertion.
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</> Create Free Widget🏡 Property Value Impact Analysis
Between 2019 and 2024, Sierra Vista's air quality worsened by 1.9 μg/m³. Based on NBER studies, this change correlates with a estimated 7.6% decrease in relative property value retention.
Cleaner Alternatives in AZ
Why Sierra Vista earned a 45.1
Raw inputs, scoring weights, and data coverage for this city.
Best Time to Run
Find the cleanest hours for your run today.
Cycling Forecast
Avoid pollution spikes on your next ride.
📅 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% | 19.6 |
| Unhealthy Days | 25% | 61 |
| 5-Year Trend | 20% | 40.5 |
| Seasonal Variability | 10% | 72.4 |
| Extreme Events | 5% | 95 |
Deep Dive: Sierra Vista & Related Data
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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Sierra Vista Air Quality FAQs
Is Sierra Vista a good fit for people who care about long-term air quality?
Sierra Vista's clean air score of 45.1 and grade of D suggest elevated long-term particulate exposure. The annual PM2.5 mean of 10.6 µg/m³ is considered elevated for those prioritizing air quality.
How frequent is unhealthy air in Sierra Vista?
Unhealthy air days occur 1.9% of the time in Sierra Vista, aligning with its D grade and PM2.5 annual mean of 10.6 µg/m³. Residents face more frequent exposure to pollution than in many other regions.
Is air quality in Sierra Vista improving or getting worse over time?
The air quality trend in Sierra Vista is currently worsening, indicating a decline in long-term conditions over recent years.
Does air quality vary within Sierra Vista?
Air quality can vary within the city due to local traffic, industry, and location patterns, without naming specific districts.