Question 1

What is the weather like in Eugene by month?

Accepted Answer

No monthly climate normals are on file for Eugene.

Question 2

When is air quality worst in Eugene?

Accepted Answer

November carries the highest modelled PM2.5 of the year at about 10 µg/m³. The WHO 2021 annual guideline is 5 µg/m³. These are model values, not station readings.

Eugene weather by month