Colleferro vs Milan: PM2.5 compared

Colleferro and Milan were both measured on only 0 days over the last year, too few to compare them (it takes 30).

Right now

Colleferro–not on the 24-hour board right now

Milan–not on the 24-hour board right now

Side by side with Ferentino, Gujranwala.

Side by side with Monza, Vinovo, Gujranwala.

The same rules as every SmogRank figure: reference monitors first, and a day counts with 18 measured hours. How we measure.

Updated 2026-10-06 21:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.