Chicago has a air quality pm2.5 value of 27.5 ug/m3. Fine particulate pollution; lower is generally better.
What this means
Lower values are generally better for this metric. STATLAS shows source names, update dates, and related places so the number is easy to verify and compare.
FAQs
What is Chicago's air quality pm2.5?
STATLAS currently shows 27.5 ug/m3 for air quality pm2.5, updated on 2026-05-27 from OpenAQ methodology coverage.
Is Chicago better than nearby cities for air quality pm2.5?
STATLAS currently shows 27.5 ug/m3 for air quality pm2.5, updated on 2026-05-27 from OpenAQ methodology coverage.
When was this Chicago data updated?
STATLAS currently shows 27.5 ug/m3 for air quality pm2.5, updated on 2026-05-27 from OpenAQ methodology coverage.