Belleville, IL
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.
Belleville, IL air quality summary: Belleville, IL, has a clean air score of 68.6 and a C grade, with an annual PM2.5 mean of 8.6. This data provides a baseline for understanding the long-term atmospheric conditions in the city. The annual PM2.5 mean in Belleville is 8.6, which is described as moderate or acceptable but still relevant for long-term exposure. Long-term air quality in Belleville has been improving over recent years.
Clean Air Score
The clean air score of 68.6 and C grade indicate that Belleville's air quality is within a moderate range. This reflects long-term particulate levels that are typical for many developed areas in the region.
🏡 What This Means for Buying
Air quality should be treated as one factor in a broader relocation or housing decision in Belleville. A C grade indicates that while conditions are generally stable, they remain a relevant consideration for long-term environmental awareness.
Indoor Air Quality in Belleville, IL
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 Belleville.
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 Belleville:
- 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 Belleville Homes:
🩺 My Health Risk Assessment
See how Belleville'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, Belleville's air quality improved by 0.6 μg/m³. Based on NBER studies, this change correlates with a estimated 2.4% increase in relative property value retention.
Cleaner Alternatives in IL
Why Belleville earned a 68.6
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% | 49 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 53 |
| Seasonal Variability | 10% | 90.1 |
| 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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Belleville Air Quality FAQs
Is Belleville a good fit for people who care about long-term air quality?
Belleville holds a clean air score of 68.6 and a C grade, with an annual PM2.5 mean of 8.6. These metrics suggest a moderate environment for those who are attentive to long-term air quality factors.
What is the frequency of unhealthy air or long-term pollution exposure in Belleville?
Belleville reports 0% unhealthy air days according to available data. Its C grade and 8.6 PM2.5 mean further define its profile as one with limited instances of acute particulate spikes.
Is air quality in Belleville improving or getting worse over time?
The air quality in Belleville has shown an improving trend over recent years. This suggests a positive shift in long-term particulate concentrations for the area.
Does air quality vary across different parts of Belleville?
Air quality can vary within Belleville due to local factors such as traffic density, industrial presence, and specific location patterns. While the city-wide grade provides a general context, localized conditions may differ.