Air Quality in Eureka, United States
Cloudy
16.8°C · 71.4% humidity
16.8°
Feels 16.8°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Eureka's air quality — share it
AQI Forecast
25
7am
25
25
26
10am
27
27
27
1pm
27
27
27
4pm
27
25
25
7pm
25
25
25
10pm
27
27
27
1am
27
27
27
4am
27
25
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.
71.4%
Humidity
21.5 km/h
Wind NW
1016.5 hPa
Pressure
4.4
UV Moderate
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 INDEX4.4
Moderate
What is the 7-day forecast for Eureka?
09-05
16.8° 10.9°
09-06
15.2° 12.0°
0.06 mm
09-07
17.0° 10.9°
0.06 mm
09-08
18.4° 12.7°
09-09
16.4° 11.3°
09-10
15.8° 12.0°
0.06 mm
09-11
15.1° 11.3°
Both models agree
Avg diff: 1.5°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 2026-09-05T17:02 UTC.