Air Quality in Coos Bay, United States

Windy
14.5°C · 80.7% humidity
14.5°
Feels 14.5°
394
Hazardous
Everyone should stay indoors and keep windows closed.
1 station

Nearby Monitoring Stations

AQI Forecast
27 10am
27
27
394 1pm
290
215
162 4pm
124
103
84 7pm
70
60
52 10pm
47
43
41 1am
39
37
36 4am
36
28
28 7am
28
27
AD 728×90

Air Quality Index Trend

35h · 1 stn

Coos Bay'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 Coos Bay is 24.5× the WHO 24-hour guideline of 15 µg/m³.

80.7%
Humidity
91.3 km/h
Wind NNW
1016.3 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
394
367.3 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Coos Bay?

Temperature & Precipitation

PM2.5 Trend

35h · 1 station
PM2.5367.3 µg/m³ ×24.5 WHO
Hazardous
PM1013.7 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (1 station within 25 km)
367.3
Median
367.3
Average
367.3
Low
367.3
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -361.0

What is the 7-day forecast for Coos Bay?

07-21
15.4° 11.3°
07-22
15.4° 12.2°
0.19 mm
07-23
16.2° 12.6°
07-24
16.7° 11.8°
07-25
15.3° 12.2°
07-26
16.1° 11.6°
07-27
16.7° 12.3°
Both models agree Avg diff: 2.0°C

Where are air quality stations near Coos Bay?

394
Coos Bay Marshfield HS
0.4 km PM2.5: 367.3 µg/m³

What cities are near Coos Bay?

20 Roseburg 44 Eugene 28 Grants Pass 67 Central Point 55 Corvallis 53 Dallas 74 Four Corners 63 Keizer 55 Hayesville 15 McMinnville
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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 2026-07-21T20:03 UTC.