Air Quality in Walla Walla, United States
Windy
29.7°C · 12.1% humidity
29.7°
Feels 29.7°
103
Unhealthy for sensitive groups
Sensitive groups should reduce prolonged outdoor exertion.
1 station
Nearby Monitoring Stations
Walla Walla's air quality — share it
AQI Forecast
Calibrated
107
1pm
107
107
103
4pm
87
87
87
7pm
87
107
107
10pm
119
119
136
1am
136
137
137
4am
199
119
119
7am
119
107
87
10am
80
80
Station readings
82
75
85
CAMS model
adj +53
54
54
54
54
34
34
34
34
54
54
66
66
83
83
84
84
146
66
66
66
54
34
27
27
Air Quality Index Trend
34h · 1 stnWalla Walla'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 Walla Walla is 2.4× the WHO 24-hour guideline of 15 µg/m³.
12.1%
Humidity
103.9 km/h
Wind WSW
1009.4 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
36.3 µg/m³
PM10
41.15 µg/m³
050100150200300500
What is the weather forecast for Walla Walla?
Temperature & Precipitation
PM2.5 Trend
34h · 1 stationPM2.536.3 µg/m³
×2.4 WHO
Unhealthy for sensitive groups
PM1041.15 µg/m³
Good
UV INDEX14.9
Extreme
Station readings (1 station within 25 km)
36.3
Median
36.3
Average
36.3
Low
36.3
High
PM2.5 µg/m³ · Model: 16.35 · Bias: -20.0
What is the 7-day forecast for Walla Walla?
08-03
42.9° 21.3°
08-04
33.7° 22.3°
08-05
40.4° 23.0°
08-06
32.9° 21.4°
08-07
38.8° 21.5°
08-08
35.6° 14.3°
08-09
36.9° 18.3°
Both models agree
Avg diff: 3.8°C
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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 2026-08-07T23:05 UTC.