East Saint Louis, 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.
East Saint Louis, IL air quality summary: East Saint Louis, IL, maintains a clean air score of 68.6 and an overall grade of C. The city's annual PM2.5 mean is 8.6 µg/m³. East Saint Louis records an annual PM2.5 mean of 8.6 µg/m³, representing the average concentration of fine particles over the year. Long-term air quality in East Saint Louis has been improving over recent years.
Clean Air Score
The clean air score of 68.6 and C grade reflect moderate long-term air quality. These metrics indicate that particulate levels stay within regional averages but require consistent observation.
🏡 What This Means for Buying
Prospective residents may find East Saint Louis' improving air quality trend to be a relevant indicator for long-term residency. These metrics provide a factual foundation for assessing the city's environmental characteristics.
Indoor Air Quality in East Saint Louis, 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 East Saint Louis.
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 East Saint Louis:
- 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 East Saint Louis Homes:
🩺 My Health Risk Assessment
See how East Saint Louis's air quality affects you and your family specifically.
Health Advice
Good for most outdoor activities.
Add East Saint Louis Air Quality to your site
Perfect for local news, real estate blogs, and community pages.
</> Create Free Widget🏡 Property Value Impact Analysis
Between 2019 and 2024, East Saint Louis'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
🏆 Best Neighborhoods in East Saint Louis
We analyzed air quality across multiple zip codes to find the healthiest spots to live. See which neighborhoods ranked #1.
Why East Saint Louis 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
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% | 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.
More Cities in IL
Similar Rankings Nationwide
East Saint Louis Air Quality FAQs
Is East Saint Louis a good fit for people who care about long-term air quality?
East Saint Louis holds a clean air score of 68.6 and a grade of C, which reflects moderate particulate levels. The annual PM2.5 mean of 8.6 µg/m³ is consistent with these findings.
What is the frequency of unhealthy air or long-term pollution exposure in East Saint Louis?
East Saint Louis reports 0% of days reach unhealthy particulate thresholds, supporting its C grade. The annual PM2.5 average of 8.6 µg/m³ reflects the city's typical daily exposure.
Is air quality improving or getting worse over time in East Saint Louis?
Data indicates that long-term air quality in East Saint Louis is improving, showing a positive shift in particulate levels over time.
Does air quality vary across different parts of East Saint Louis?
East Saint Louis has neighborhood or ZIP-level detail available for readers interested in more localized air quality information.