Cook, Illinois vs Los Angeles, California Air Quality
Side-by-side air quality comparison using 10 years of EPA monitoring data. Cook, Illinois has the edge with an Air Quality Grade of D (49/100).
| Metric | Cook, Illinois | Los Angeles, California |
|---|---|---|
| Air Quality Grade | D (49/100) | D (36/100) |
| Current Median AQI | 57 (Moderate) | 67 (Moderate) |
| 5-Year Average AQI | 57 | 75 |
| 10-Year Trend | → Stable (-2) | ↓ Improving (-15) |
| Unhealthy Days/Year | 18 | 100 |
| Primary Pollutant | Fine Particulate Matter (PM2.5) | Fine Particulate Matter (PM2.5) |
Analysis
Cook, Illinois outperforms Los Angeles, California on overall air quality. With a Grade D (49/100) and a median AQI of 57,Cook, Illinois is currently in the "Moderate" range and is stable over the past decade.
Frequently Asked Questions
Cook, Illinois has better air quality with a Grade D (49/100) compared to Los Angeles, California's Grade D (36/100). Cook, Illinois has a current median AQI of 57 and is stable over the past decade.
Cook, Illinois averages 18 unhealthy air days per year (5-year average), while Los Angeles, California averages 100. Unhealthy days are those when AQI exceeds 100 and sensitive groups should limit outdoor activity.
Cook, Illinois's primary pollutant is Fine Particulate Matter (PM2.5), while Los Angeles, California's is Fine Particulate Matter (PM2.5). Both cities share the same dominant pollutant.