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Alum Rock (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

Fair
14°C
Fair
Humidity
86.4%
Wind
2 m/s
Pressure
1013.1 hPa
Direction
349°
Sunrise
04:00
Sunset
16:00
24h Forecast:
Temp.
12° / 16°
Precip.
14.7mm
Max wind
6.3 m/s

Hourly Forecast

10.04
Now
Weather
14°
10.04
05:00
Weather
13°
10.04
06:00
Weather
13°
10.04
07:00
Weather
13°
10.04
08:00
Weather
12°
10.04
09:00
Weather
12°
10.04
10:00
Weather
12°
10.04
11:00
Weather
12°
10.04
12:00
Weather
12°
10.04
13:00
Weather
12°
10.04
14:00
Weather
12°
0.2
10.04
15:00
Weather
13°
10.04
16:00
Weather
14°
0.1
10.04
17:00
Weather
15°
2.9
10.04
18:00
Weather
15°
5.5
10.04
19:00
Weather
15°
1.7
10.04
20:00
Weather
16°
1.3
10.04
21:00
Weather
16°
0.2
6
10.04
22:00
Weather
16°
0.2
6
10.04
23:00
Weather
16°
0.4
6
11.04
00:00
Weather
15°
0.3
6
11.04
01:00
Weather
14°
0.2
6
11.04
02:00
Weather
13°
0.4
11.04
03:00
Weather
12°
1.3

Temperature

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

Precipitation

5.5mm
0mm
14:00
0.2mm
16:00
0.1mm
17:00
2.9mm
18:00
5.5mm
19:00
1.7mm
20:00
1.3mm
21:00
0.2mm
22:00
0.2mm
23:00
0.4mm
00:00
0.3mm
01:00
0.2mm
02:00
0.4mm
03:00
1.3mm
04:00 15:00 03:00

Wind

6.3m/s
0m/s
04:00
2 m/s
05:00
1.5 m/s
06:00
1.2 m/s
07:00
1.7 m/s
08:00
2.1 m/s
09:00
2.1 m/s
10:00
2.3 m/s
11:00
2.6 m/s
12:00
2.7 m/s
13:00
2.6 m/s
14:00
2.5 m/s
15:00
2.8 m/s
16:00
3.7 m/s
17:00
3.8 m/s
18:00
5 m/s
19:00
4.5 m/s
20:00
5 m/s
21:00
5.7 m/s
22:00
6.1 m/s
23:00
6.2 m/s
00:00
6.3 m/s
01:00
5.5 m/s
02:00
4.7 m/s
03:00
4.5 m/s
04:00 15:00 03:00

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
69.7 km
59
19.7%

Measurement time: 2026-04-10 04:00

Calculated from PM2.5/PM10

O3
33.2 km
72.71 µg/m3
45.4%

Measurement time: 2026-04-10 04:00

source: OpenWeatherMap

PM2.5
69.7 km
16 µg/m3
19%

Measurement time: 2026-04-10 04:00

source: Aqicn

PM10
69.7 km
18 µg/m3
12.9%

Measurement time: 2026-04-10 04:00

source: Aqicn

NO2
84.4 km
3.95 µg/m3
2%

Measurement time: 2026-04-10 06:11

source: OpenWeatherMap

CO
84.4 km
0.12265 mg/m3
0.9%

Measurement time: 2026-04-10 06:11

source: OpenWeatherMap

SO2
84.4 km
0.88 µg/m3
0.3%

Measurement time: 2026-04-10 06:11

source: OpenWeatherMap

Info


Region: California
Latitude: 37.36605
Longitude: -121.82718


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About Air Quality in Alum Rock

Air quality in Alum Rock 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 Alum Rock

  • 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 Alum Rock?

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 Alum Rock

If you're planning outdoor activities in Alum Rock, 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.