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West Side Highway (Washington) (US)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Cloudy
10°C
Cloudy
Humidity
82.9%
Wind
2 m/s
Pressure
1024 hPa
Direction
233°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
7° / 17°
Precip.
0.5mm
Max wind
3 m/s

Hourly Forecast

31.01
Now
Weather
10°
31.01
11:00
Weather
10°
31.01
12:00
Weather
31.01
13:00
Weather
10°
31.01
14:00
Weather
31.01
15:00
Weather
31.01
16:00
Weather
31.01
17:00
Weather
31.01
18:00
Weather
10°
31.01
19:00
Weather
12°
31.01
20:00
Weather
15°
31.01
21:00
Weather
17°
31.01
22:00
Weather
17°
31.01
23:00
Weather
17°
01.02
00:00
Weather
15°
01.02
01:00
Weather
13°
01.02
02:00
Weather
10°
01.02
03:00
Weather
01.02
04:00
Weather
01.02
05:00
Weather
01.02
06:00
Weather
01.02
07:00
Weather
01.02
08:00
Weather
01.02
09:00
Weather
0.5

Temperature

17°C
7°C
10:00
10°C
11:00
10°C
12:00
9°C
13:00
10°C
14:00
9°C
15:00
7°C
16:00
7°C
17:00
8°C
18:00
10°C
19:00
12°C
20:00
15°C
21:00
17°C
22:00
17°C
23:00
17°C
00:00
15°C
01:00
13°C
02:00
10°C
03:00
9°C
04:00
8°C
05:00
8°C
06:00
8°C
07:00
8°C
08:00
7°C
09:00
8°C
10:00 21:00 09:00

Precipitation

0.5mm
0mm
09:00
0.5mm
10:00 21:00 09:00

Wind

3m/s
0m/s
10:00
2.3 m/s
11:00
2.9 m/s
12:00
2.4 m/s
13:00
2.3 m/s
14:00
2.2 m/s
15:00
1.6 m/s
16:00
1.6 m/s
17:00
1 m/s
18:00
0.9 m/s
19:00
1.6 m/s
20:00
2.3 m/s
21:00
3 m/s
22:00
2.8 m/s
23:00
2.5 m/s
00:00
2.6 m/s
01:00
2.6 m/s
02:00
2.6 m/s
03:00
2.6 m/s
04:00
2.8 m/s
05:00
2.6 m/s
06:00
2.9 m/s
07:00
3 m/s
08:00
2.9 m/s
09:00
2.8 m/s
10:00 21:00 09:00

Radiation

No sensor within 100 km.

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
79.8 km
124
41.3%

Measurement time: 2026-01-31 10:00

Calculated from PM2.5/PM10

PM2.5
79.8 km
45 µg/m3
53.6%

Measurement time: 2026-01-31 10:00

source: Aqicn

O3
76.6 km
40.2 µg/m3
25.1%

Measurement time: 2026-01-31 10:19

source: OpenWeatherMap

NO2
76.6 km
5.59 µg/m3
2.8%

Measurement time: 2026-01-31 10:19

source: OpenWeatherMap

PM10
76.6 km
2.25 µg/m3
1.6%

Measurement time: 2026-01-31 10:19

source: OpenWeatherMap

CO
76.6 km
0.16538 mg/m3
1.2%

Measurement time: 2026-01-31 10:19

source: OpenWeatherMap

SO2
76.6 km
0.19 µg/m3
0.1%

Measurement time: 2026-01-31 10:19

source: OpenWeatherMap

Info


Region: Washington
Latitude: 46.18399
Longitude: -122.91715

Cities in the area:

About Air Quality in West Side Highway

Air quality in West Side Highway is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in West Side Highway

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in West Side Highway?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in West Side Highway

If you're planning outdoor activities in West Side Highway, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.