Air Quality in Eureka, United States
Windy
13.9°C · 83.2% humidity
13.9°
Feels 13.9°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
AQI Forecast
27
12pm
27
27
26
3pm
27
27
27
6pm
27
27
27
9pm
27
27
27
12am
27
27
27
3am
27
27
27
6am
27
27
27
9am
27
27
Eureka's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
83.2%
Humidity
79.3 km/h
Wind N
1014.1 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.25 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Eureka?
Temperature & Precipitation
PM2.56.25 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX14.9
Extreme
Both models agree
Avg diff: 0.7°C
What cities are near Eureka?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T22:37 UTC.