North Chicago, 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.
North Chicago, IL air quality summary: North Chicago, IL, has a CleanAirData score of 76.9 and a grade of B. Its annual PM2.5 mean is 7.2 µg/m³. North Chicago recorded a PM2.5 annual mean of 7.2 µg/m³, which is considered moderate for long-term exposure. The long-term air quality in North Chicago has been improving over recent years.
Clean Air Score
A score of 76.9 and a grade of B indicate that North Chicago experiences acceptable long-term air quality. Particulate levels are generally within the moderate range for the area.
🏡 What This Means for Buying
Air quality in North Chicago should be treated as one factor in a broader relocation or housing decision. The city is experiencing an improving trend in air quality.
Indoor Air Quality in North Chicago, 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 North Chicago.
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 North Chicago:
- 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 North Chicago Homes:
🩺 My Health Risk Assessment
See how North Chicago's air quality affects you and your family specifically.
Health Advice
Enjoy the outdoors! Air quality is great.
Add North Chicago 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, North Chicago's air quality improved by 1.2 μg/m³. Based on NBER studies, this change correlates with a estimated 4.8% increase in relative property value retention.
Cleaner Alternatives in IL
Why North Chicago earned a 76.9
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% | 69.2 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 56 |
| Seasonal Variability | 10% | 92.1 |
| 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
North Chicago Air Quality FAQs
Is North Chicago a good fit for people who care about long-term air quality?
North Chicago, IL, is a solid choice for air quality-conscious individuals, with a score of 76.9 and a grade of B. Its annual PM2.5 mean is 7.2 µg/m³.
How frequent is unhealthy air or long-term pollution exposure in North Chicago?
North Chicago reports 0% unhealthy days, which is consistent with its grade of B. Residents typically face stable air conditions without extreme spikes.
Is air quality in North Chicago improving or getting worse over time?
Air quality in North Chicago has been improving over recent years. This positive trend is confirmed with 100% data completeness.
Does air quality vary across different parts of North Chicago?
Air quality can vary within North Chicago due to local traffic, industry, and location patterns. Industrial activity near the lakefront can influence local particulate levels.