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Stillwater (Minnesota) (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

Partly cloudy
8°C
Partly cloudy
Humidity
59%
Wind
5 m/s
Pressure
1012.6 hPa
Direction
173°
Sunrise
04:00
Sunset
16:00
24h Forecast:
Temp.
3° / 20°
Precip.
0mm
Max wind
5.1 m/s

Hourly Forecast

21.04
Now
Weather
5
21.04
04:00
Weather
21.04
05:00
Weather
21.04
06:00
Weather
21.04
07:00
Weather
21.04
08:00
Weather
21.04
09:00
Weather
21.04
10:00
Weather
21.04
11:00
Weather
21.04
12:00
Weather
21.04
13:00
Weather
21.04
14:00
Weather
10°
21.04
15:00
Weather
13°
21.04
16:00
Weather
15°
21.04
17:00
Weather
17°
21.04
18:00
Weather
19°
21.04
19:00
Weather
20°
21.04
20:00
Weather
20°
21.04
21:00
Weather
20°
21.04
22:00
Weather
20°
21.04
23:00
Weather
20°
22.04
00:00
Weather
17°
22.04
01:00
Weather
13°
22.04
02:00
Weather
11°

Temperature

20°C
3°C
03:00
8°C
04:00
8°C
05:00
8°C
06:00
7°C
07:00
6°C
08:00
5°C
09:00
4°C
10:00
4°C
11:00
3°C
12:00
4°C
13:00
6°C
14:00
10°C
15:00
13°C
16:00
15°C
17:00
17°C
18:00
19°C
19:00
20°C
20:00
20°C
21:00
20°C
22:00
20°C
23:00
20°C
00:00
17°C
01:00
13°C
02:00
11°C
03:00 14:00 02:00

Precipitation

0mm
0mm
03:00 14:00 02:00

Wind

5.1m/s
0m/s
03:00
5.1 m/s
04:00
4.9 m/s
05:00
4.6 m/s
06:00
3.9 m/s
07:00
3.1 m/s
08:00
2.6 m/s
09:00
2 m/s
10:00
1.4 m/s
11:00
0.8 m/s
12:00
0.6 m/s
13:00
0.5 m/s
14:00
0.9 m/s
15:00
1.3 m/s
16:00
1.8 m/s
17:00
2.4 m/s
18:00
2.6 m/s
19:00
2.5 m/s
20:00
2.7 m/s
21:00
2.9 m/s
22:00
2.8 m/s
23:00
2.4 m/s
00:00
1.6 m/s
01:00
2 m/s
02:00
1.9 m/s
03:00 14:00 02:00

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
63 km
82
27.3%

Measurement time: 2026-04-21 04:00

Calculated from PM2.5/PM10

O3
72.4 km
107.56 µg/m3
67.2%

Measurement time: 2026-04-21 04:51

source: OpenWeatherMap

PM2.5
63 km
27 µg/m3
32.1%

Measurement time: 2026-04-21 04:00

source: Aqicn

PM10
72.4 km
4.17 µg/m3
3%

Measurement time: 2026-04-21 04:51

source: OpenWeatherMap

CO
72.4 km
0.15204 mg/m3
1.1%

Measurement time: 2026-04-21 04:51

source: OpenWeatherMap

NO2
72.4 km
1.75 µg/m3
0.9%

Measurement time: 2026-04-21 04:51

source: OpenWeatherMap

SO2
72.4 km
0.61 µg/m3
0.2%

Measurement time: 2026-04-21 04:51

source: OpenWeatherMap

Info


Region: Minnesota
Latitude: 45.05636
Longitude: -92.80604


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About Air Quality in Stillwater

Air quality in Stillwater 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 Stillwater

  • 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 Stillwater?

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 Stillwater

If you're planning outdoor activities in Stillwater, 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.