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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

Partly cloudy
28°C
Partly cloudy
Humidity
37.3%
Wind
2 m/s
Pressure
1015.1 hPa
Direction
117°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
17° / 28°
Precip.
0mm
Max wind
2.7 m/s

Hourly Forecast

27.02
Now
Weather
28°
27.02
21:00
Weather
28°
27.02
22:00
Weather
28°
27.02
23:00
Weather
28°
28.02
00:00
Weather
27°
28.02
01:00
Weather
25°
28.02
02:00
Weather
23°
28.02
03:00
Weather
23°
28.02
04:00
Weather
21°
28.02
05:00
Weather
19°
28.02
06:00
Weather
19°
28.02
07:00
Weather
18°
28.02
08:00
Weather
18°
28.02
09:00
Weather
18°
28.02
10:00
Weather
18°
28.02
11:00
Weather
17°
28.02
12:00
Weather
17°
28.02
13:00
Weather
17°
28.02
14:00
Weather
17°
28.02
15:00
Weather
17°
28.02
16:00
Weather
20°
28.02
17:00
Weather
23°
28.02
18:00
Weather
25°
28.02
19:00
Weather
27°

Temperature

28°C
17°C
20:00
28°C
21:00
28°C
22:00
28°C
23:00
28°C
00:00
27°C
01:00
25°C
02:00
23°C
03:00
23°C
04:00
21°C
05:00
19°C
06:00
19°C
07:00
18°C
08:00
18°C
09:00
18°C
10:00
18°C
11:00
17°C
12:00
17°C
13:00
17°C
14:00
17°C
15:00
17°C
16:00
20°C
17:00
23°C
18:00
25°C
19:00
27°C
20:00 07:00 19:00

Precipitation

0mm
0mm
20:00 07:00 19:00

Wind

2.7m/s
0m/s
20:00
2.1 m/s
21:00
2.3 m/s
22:00
2.2 m/s
23:00
2.1 m/s
00:00
1.6 m/s
01:00
1.2 m/s
02:00
1.3 m/s
03:00
1.9 m/s
04:00
2.6 m/s
05:00
2.7 m/s
06:00
2.4 m/s
07:00
2.2 m/s
08:00
2 m/s
09:00
1.9 m/s
10:00
2 m/s
11:00
2.1 m/s
12:00
2.1 m/s
13:00
2.2 m/s
14:00
2.4 m/s
15:00
2.7 m/s
16:00
2.4 m/s
17:00
1.9 m/s
18:00
1.7 m/s
19:00
2.1 m/s
20:00 07:00 19:00

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
73.9 km
161
53.7%

Measurement time: 2026-02-27 19:18

Calculated from PM2.5/PM10

PM2.5
73.9 km
75.42 µg/m3
89.8%

Measurement time: 2026-02-27 19:18

source: OpenWeatherMap

PM10
73.9 km
99.48 µg/m3
71.1%

Measurement time: 2026-02-27 19:18

source: OpenWeatherMap

NO2
73.9 km
81.51 µg/m3
40.8%

Measurement time: 2026-02-27 19:18

source: OpenWeatherMap

O3
73.9 km
58.2 µg/m3
36.4%

Measurement time: 2026-02-27 19:18

source: OpenWeatherMap

CO
73.9 km
0.93151 mg/m3
6.7%

Measurement time: 2026-02-27 19:18

source: OpenWeatherMap

SO2
73.9 km
5.74 µg/m3
1.6%

Measurement time: 2026-02-27 19:18

source: OpenWeatherMap

Info


Region: California
Latitude: 34.10306
Longitude: -117.84589


Solar Energy

Good
609 W/m²
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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.