Springfield, IL Air Quality
Report & Trends
Analysis & History
The Verdict
Springfield, IL is currently ranked #91 out of 224 cities tracked.
Plan your outdoor activities carefully in June, the statistical peak for AQI spikes in IL.
Health Recommendation
Sensitive groups should consider monitoring daily forecast apps significantly closer.
10-Year Annual PM2.5 Average
Analysis: Annual average Median AQI from 2015 to 2025.
Compared to national averages, Springfield, IL has a unique air quality profile driven by seasonal changes. Alarmingly, annual PM2.5 averages have worsened over the last decade, largely driven by seasonal haze.
Seasonal Risk Calendar
The "Smoke Season" Calendar
Values represent historical Average Monthly AQI (PM2.5). Higher is worse.
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Common Questions
When is the worst time for air quality in Springfield, IL?
Based on 10 years of data, the worst months for air quality in Springfield, IL are: June (AQI 49.5), August (AQI 48.5), July (AQI 48.1). These months typically see the highest concentrations of PM2.5 due to fine particulate matter trapped by local geography.
Is it safe to move to Springfield, IL given the air quality?
Absolutely. Springfield, IL has some of the cleanest air in the country. While no place is immune to occasional regional smoke, the long-term data shows it is a safe and healthy environment for residents.
Why is the air in Springfield, IL getting worse?
The primary driver is industrial activity and inversion layers. While local vehicle emissions have largely stabilized, fine particulate matter trapped by local geography frequently settles in the Springfield, IL valley, driving up the annual PM2.5 averages.
Do I really need an air purifier in Springfield, IL?
For daily use, likely not. Springfield, IL's air quality consistently rates as "Good." However, owning one as a precaution for wildfire season or allergy relief is still a smart decision for sensitive groups.
How accurate is this data?
This report is built on official EPA Air Quality System (AQS) data. We aggregated daily summary files from 2014 to present to build these charts. Unlike real-time apps that estimate, this is the verified historical record.
Is Springfield, IL safe from other disasters?
Air quality is just one factor. Check our sister site for a complete analysis of tornado, hurricane, and flood risks.
Full Safety Report →Summary
The area is worth it, but it come with a new cost: vigilance during pollution season.