Air Quality in Longview, United States

Partly Cloudy
19.0°C · 54.5% humidity
19.0°
Feels 19.0°
49
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
56 5pm
54
50
49 8pm
51
51
51 11pm
51
51
51 2am
51
51
51 5am
51
51
51 8am
51
51
51 11am
51
51
51 2pm
51
51
Station readings
56
54
50
42
CAMS model adj +24
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
AD 728×90

Air Quality Index Trend

44h · 2 stn

Longview's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

54.5%
Humidity
24.0 km/h
Wind W
1016.9 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
49
11.7 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Longview?

Temperature & Precipitation

PM2.5 Trend

44h · 2 stations
PM2.511.7 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (3 stations within 25 km)
11.7
Median
10.07
Average
6.6
Low
12.1
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -5.4

What is the 7-day forecast for Longview?

08-03
31.7° 7.5°
08-04
25.5° 9.9°
08-05
26.9° 8.7°
08-06
25.5° 11.5°
08-07
29.5° 9.9°
08-08
25.8° 8.8°
08-09
24.1° 6.6°
Both models agree Avg diff: 4.7°C

Where are air quality stations near Longview?

43
30th Ave, Longview, Washington, USA
1.8 km PM2.5: 10.3 µg/m³
29
Kelso
9.4 km PM2.5: 7.0 µg/m³

What cities are near Longview?

61 Battle Ground 54 Salmon Creek 54 Hazel Dell 54 Five Corners 53 Vancouver 54 Orchards 57 Centralia 54 Bethany 26 Hillsboro 26 Forest Grove
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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 2026-08-08T03:45 UTC.