Air Quality in Eureka, United States
Windy
14.5°C · 82.2% humidity
14.5°
Feels 14.5°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Eureka's air quality — share it
AQI Forecast
25
11am
27
27
26
2pm
27
34
34
5pm
34
34
34
8pm
27
27
27
11pm
27
27
27
2am
27
27
27
5am
27
27
27
8am
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. Current PM2.5 concentration in Eureka is 1.2× the WHO annual guideline of 5 µg/m³.
82.2%
Humidity
48.3 km/h
Wind NNW
1022.9 hPa
Pressure
19.9
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 INDEX19.9
Extreme
What is the 7-day forecast for Eureka?
05-28
15.6° 10.3°
05-29
14.5° 11.4°
05-30
13.3° 11.3°
05-31
15.2° 12.0°
06-01
14.5° 10.8°
06-02
13.8° 10.7°
06-03
12.9° 9.8°
0.06 mm
Both models agree
Avg diff: 1.2°C
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-28T21:39 UTC.