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Winters (California) (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
10°C
Partly cloudy
Humidity
79.8%
Wind
1 m/s
Pressure
1028.3 hPa
Direction
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
8° / 15°
Precip.
0mm
Max wind
2.4 m/s

Hourly Forecast

30.01
Now
Weather
10°
30.01
18:00
Weather
12°
30.01
19:00
Weather
13°
30.01
20:00
Weather
14°
30.01
21:00
Weather
14°
30.01
22:00
Weather
15°
30.01
23:00
Weather
15°
31.01
00:00
Weather
15°
31.01
01:00
Weather
13°
31.01
02:00
Weather
11°
31.01
03:00
Weather
10°
31.01
04:00
Weather
10°
31.01
05:00
Weather
10°
31.01
06:00
Weather
31.01
07:00
Weather
31.01
08:00
Weather
10°
31.01
09:00
Weather
10°
31.01
10:00
Weather
31.01
11:00
Weather
31.01
12:00
Weather
31.01
13:00
Weather
31.01
14:00
Weather
31.01
15:00
Weather
31.01
16:00
Weather

Temperature

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

Precipitation

0mm
0mm
17:00 04:00 16:00

Wind

2.4m/s
0m/s
17:00
1.3 m/s
18:00
1.4 m/s
19:00
1.9 m/s
20:00
1.8 m/s
21:00
2 m/s
22:00
2.2 m/s
23:00
2.4 m/s
00:00
2.4 m/s
01:00
1.6 m/s
02:00
1.9 m/s
03:00
2.1 m/s
04:00
2.1 m/s
05:00
2.2 m/s
06:00
2.1 m/s
07:00
2 m/s
08:00
1.7 m/s
09:00
1.4 m/s
10:00
1.1 m/s
11:00
0.7 m/s
12:00
0.5 m/s
13:00
0.7 m/s
14:00
0.9 m/s
15:00
0.9 m/s
16:00
1.1 m/s
17:00 04:00 16:00

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
73.6 km
142
47.3%

Measurement time: 2026-01-30 16:32

Calculated from PM2.5/PM10

PM2.5
73.6 km
52.49 µg/m3
62.5%

Measurement time: 2026-01-30 16:32

source: OpenWeatherMap

PM10
73.6 km
63.65 µg/m3
45.5%

Measurement time: 2026-01-30 16:32

source: OpenWeatherMap

NO2
73.6 km
59.28 µg/m3
29.6%

Measurement time: 2026-01-30 16:32

source: OpenWeatherMap

O3
58.4 km
21.64 µg/m3
13.5%

Measurement time: 2026-01-30 16:04

source: OpenWeatherMap

CO
73.6 km
0.56202 mg/m3
4%

Measurement time: 2026-01-30 16:32

source: OpenWeatherMap

SO2
73.6 km
4.83 µg/m3
1.4%

Measurement time: 2026-01-30 16:32

source: OpenWeatherMap

Info


Region: California
Latitude: 38.52491
Longitude: -121.9708


Solar Energy

Low
223.9 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Winters

About Air Quality in Winters

Air quality in Winters 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 Winters

  • 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 Winters?

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 Winters

If you're planning outdoor activities in Winters, 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.