Air Quality in Hermiston, United States

Windy
32.2°C · 22.7% humidity
32.2°
Feels 32.2°
42
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast
24 2pm
24
24
42 5pm
37
33
31 8pm
29
28
27 11pm
27
26
26 2am
26
25
25 5am
25
25
25 8am
25
25
25 11am
25
25
AD 728×90

Air Quality Index Trend

48h · 5 stn

Hermiston'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 Hermiston is 2.0× the WHO annual guideline of 5 µg/m³.

22.7%
Humidity
42.4 km/h
Wind WSW
1018.3 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
42
10.05 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

48h · 5 stations
PM2.510.05 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX5.9
High
AD 300×250
10.05
Median
10.05
Average
8.6
Low
11.5
High
PM2.5 µg/m³ · Model: 6.15 · Bias: -3.9
05-29
32.2° 10.7°
0.38 mm
05-30
24.2° 13.7°
05-31
35.9° 17.0°
06-01
27.5° 8.2°
06-02
33.1° 11.9°
06-03
27.1° 6.2°
06-04
26.4° 9.6°
4.5 mm
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T00:11 UTC.