Norman, OK
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.
Norman, OK air quality summary: Norman, OK has a clean air score of 64.6 and a grade of C. The city's annual mean PM2.5 concentration is 9 µg/m³. Norman records an annual mean PM2.5 concentration of 9 µg/m³, which represents moderate long-term exposure. The long-term air quality trend in Norman is characterized by limited or modest change.
Clean Air Score
A clean air score of 64.6 and grade of C indicate moderate long-term air quality for residents. These metrics suggest that the area experiences pollution levels common to many urban environments in the region.
🏡 What This Means for Buying
Air quality should be considered as one component of a broader relocation or housing evaluation in Norman. The stable trend suggests that environmental conditions have remained consistent over recent years.
Indoor Air Quality in Norman, OK
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 Norman.
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 Norman:
- 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 Norman Homes:
🩺 My Health Risk Assessment
See how Norman's air quality affects you and your family specifically.
Health Advice
Good for most outdoor activities.
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</> Create Free Widget🏡 Property Value Impact Analysis
Between 2019 and 2024, Norman's air quality improved by 0.4 μg/m³. Based on NBER studies, this change correlates with a estimated 1.6% increase in relative property value retention.
Cleaner Alternatives in OK
Why Norman earned a 64.6
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% | 42.4 |
| Unhealthy Days | 25% | 94.2 |
| 5-Year Trend | 20% | 50 |
| Seasonal Variability | 10% | 90.6 |
| 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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Norman Air Quality FAQs
Is Norman a good fit for people who care about long-term air quality?
Norman, OK offers a moderate air quality profile with a score of 64.6 and a grade of C. Its PM2.5 annual mean of 9 µg/m³ is acceptable for many residents seeking stable conditions.
How often does Norman experience unhealthy air or high pollution exposure?
Norman experiences unhealthy air days approximately 0.3% of the time. This aligns with its grade of C and moderate annual particulate levels.
Is air quality in Norman improving or getting worse over time?
The air quality trend in Norman is stable, reflecting little significant change in either direction over recent years.
Does air quality vary across different parts of the city?
Air quality can vary within the city due to local traffic, industry, and location patterns, even when using data from a proxy source.