Air Quality in Arcata, United States
Partly Cloudy
16.7°C · 68.0% humidity
16.7°
Feels 16.7°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Arcata'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
Arcata'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 Arcata is 1.2× the WHO annual guideline of 5 µg/m³.
68.0%
Humidity
37.0 km/h
Wind WNW
1022.2 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 Arcata?
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 Arcata?
05-28
18.8° 8.7°
05-29
17.4° 8.8°
05-30
14.3° 10.2°
0.06 mm
05-31
22.3° 13.8°
0.06 mm
06-01
25.5° 5.6°
06-02
17.6° 9.7°
06-03
17.4° 5.3°
0.13 mm
Both models agree
Avg diff: 3.0°C
What cities are near Arcata?
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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.