Broomfield, CO
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.
Broomfield, CO air quality summary: Broomfield, CO, maintains a clean air score of 76.2 and a grade of B, indicating generally good long-term air quality. The annual mean PM2.5 concentration is 7.2, which represents a moderate level of particulate matter exposure. Broomfield reports an annual mean PM2.5 concentration of 7.2, which is an important metric for evaluating long-term air quality. The long-term air quality in Broomfield has been improving over recent years.
Clean Air Score
A clean air score of 76.2 and a grade of B suggest that Broomfield experiences acceptable air quality conditions over the long term. These metrics indicate that particulate levels are typically within a reasonable range for most residents.
🏡 What This Means for Buying
Air quality should be considered a positive element when evaluating Broomfield for relocation. It is recommended to include these metrics as one of several factors in a comprehensive home-buying decision.
Indoor Air Quality in Broomfield, CO
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 Broomfield.
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 Broomfield:
- 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 Broomfield Homes:
🩺 My Health Risk Assessment
See how Broomfield'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, Broomfield's air quality improved by 1.8 μg/m³. Based on NBER studies, this change correlates with a estimated 7.2% increase in relative property value retention.
Cleaner Alternatives in CO
Why Broomfield earned a 76.2
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% | 68.3 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 59 |
| Seasonal Variability | 10% | 88.9 |
| 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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Broomfield Air Quality FAQs
Is Broomfield a good fit for people who care about long-term air quality?
Broomfield is a solid choice for air-conscious individuals, as shown by its clean air score of 76.2 and grade of B. Its annual mean PM2.5 of 7.2 indicates that long-term particulate exposure is generally well-managed.
How frequent is unhealthy air in Broomfield?
Broomfield reports that 0% of its days are classified as having unhealthy air, which contributes to its B grade. This lack of extreme pollution events is a key benefit, even with a moderate annual PM2.5 mean of 7.2.
Is air quality in Broomfield improving or getting worse over time?
The long-term trend for air quality in Broomfield is improving, with particulate levels gradually declining in recent years. This positive direction reflects a favorable environment for long-term health.
Does air quality vary within Broomfield?
Air quality can vary within Broomfield due to local traffic, industry, and location patterns. Localized conditions may change based on proximity to transportation corridors or specific geographic features.