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Charter Oak (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

Clear sky
14°C
Clear sky
Humidity
33.1%
Wind
3 m/s
Pressure
1017.7 hPa
Direction
48°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
14° / 27°
Precip.
0mm
Max wind
3.1 m/s

Hourly Forecast

01.02
Now
Weather
14°
01.02
11:00
Weather
14°
01.02
12:00
Weather
14°
01.02
13:00
Weather
14°
01.02
14:00
Weather
14°
01.02
15:00
Weather
14°
01.02
16:00
Weather
16°
01.02
17:00
Weather
20°
01.02
18:00
Weather
23°
01.02
19:00
Weather
25°
01.02
20:00
Weather
26°
01.02
21:00
Weather
27°
01.02
22:00
Weather
27°
01.02
23:00
Weather
27°
02.02
00:00
Weather
27°
02.02
01:00
Weather
24°
02.02
02:00
Weather
22°
02.02
03:00
Weather
20°
02.02
04:00
Weather
19°
02.02
05:00
Weather
18°
02.02
06:00
Weather
17°
02.02
07:00
Weather
16°
02.02
08:00
Weather
16°
02.02
09:00
Weather
15°

Temperature

27°C
14°C
10:00
14°C
11:00
14°C
12:00
14°C
13:00
14°C
14:00
14°C
15:00
14°C
16:00
16°C
17:00
20°C
18:00
23°C
19:00
25°C
20:00
26°C
21:00
27°C
22:00
27°C
23:00
27°C
00:00
27°C
01:00
24°C
02:00
22°C
03:00
20°C
04:00
19°C
05:00
18°C
06:00
17°C
07:00
16°C
08:00
16°C
09:00
15°C
10:00 21:00 09:00

Precipitation

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

Wind

3.1m/s
0m/s
10:00
2.6 m/s
11:00
2.5 m/s
12:00
2.3 m/s
13:00
2.4 m/s
14:00
2.8 m/s
15:00
2.9 m/s
16:00
3.1 m/s
17:00
3 m/s
18:00
2.1 m/s
19:00
2.1 m/s
20:00
2.2 m/s
21:00
2.1 m/s
22:00
2.1 m/s
23:00
1.9 m/s
00:00
2.5 m/s
01:00
2.3 m/s
02:00
2.3 m/s
03:00
1.9 m/s
04:00
2 m/s
05:00
1 m/s
06:00
1.3 m/s
07:00
1 m/s
08:00
0.7 m/s
09:00
1 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
4.6 km
80
26.7%

Measurement time: 2026-02-01 09:00

Calculated from PM2.5/PM10

PM2.5
4.6 km
26 µg/m3
31%

Measurement time: 2026-02-01 09:00

source: Aqicn

O3
4.6 km
30.4 µg/m3
19%

Measurement time: 2026-02-01 09:00

source: Aqicn

PM10
4.6 km
18 µg/m3
12.9%

Measurement time: 2026-02-01 09:00

source: Aqicn

NO2
4.6 km
2.5 µg/m3
1.3%

Measurement time: 2026-02-01 09:00

source: Aqicn

Info


Region: California
Latitude: 34.10306
Longitude: -117.84589


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About Air Quality in Charter Oak

Air quality in Charter Oak 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 Charter Oak

  • 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 Charter Oak?

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 Charter Oak

If you're planning outdoor activities in Charter Oak, 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.