Was October 24, 2026 an ozone action day in Hillsboro?
NO
No — Hillsboro's air is merely Moderate (AQI 65) on a foggy, cool day, with no ozone advisory in effect.
Why
- US AQI 65 (Moderate), EU AQI 29
- Ozone 56 µg/m³; PM2.5 9.7 µg/m³
- High 14.8 °C, fog, UV index max 2.9