Today | Weather | Tuesday, July 21, 2026

Weather in Eugene, Oregon

03:07 AM
Now
Cloudy Night
66° F
Feels Like 64°
Precipitation 0 %
Wind 4 mph
Humidity 75 %
Today
Hot Day
Day 95°
Night 63°
Precipitation 25 %
Wind 6 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Eugene Weather Forecast Updated

13 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 21, 2025)
Cloudy Night

Day

75°

Night

52°

Wind

5 mph

Precipitation

5 %

Air Quality in Eugene

NOW
39 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 9.32 µg/m³
PM10 13.3 µg/m³
O3 0.011 ppm
NO2 1.3 ppb
SO2 0.1 ppb
CO 0.09 ppm
NH3 1.73 µg/m³
NO 0.01 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.59.32 µg/m³
PM1013.3 µg/m³
O320.75 µg/m³
NO22.44 µg/m³
SO20.14 µg/m³
CO99.89 µg/m³
NH31.73 µg/m³
NO0.01 µg/m³