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Chillum (Maryland) (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

Bewölkt
13°C
Bewölkt
Humidity
52.2%
Wind
5 m/s
Pressure
1021.4 hPa
Direction
118°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
12° / 21°
Precip.
16.2mm
Max wind
10 m/s

Hourly Forecast

15.03
Now
Weather
13°
5
15.03
21:00
Weather
13°
15.03
22:00
Weather
13°
6
15.03
23:00
Weather
12°
6
16.03
00:00
Weather
13°
6
16.03
01:00
Weather
13°
0.1
6
16.03
02:00
Weather
13°
1.5
7
16.03
03:00
Weather
12°
0.2
7
16.03
04:00
Weather
13°
1.3
6
16.03
05:00
Weather
13°
0.2
7
16.03
06:00
Weather
13°
1.1
6
16.03
07:00
Weather
14°
0.1
5
16.03
08:00
Weather
14°
0.1
6
16.03
09:00
Weather
15°
6
16.03
10:00
Weather
16°
6
16.03
11:00
Weather
17°
7
16.03
12:00
Weather
17°
2.7
7
16.03
13:00
Weather
17°
7
7
16.03
14:00
Weather
17°
0.8
7
16.03
15:00
Weather
18°
0.3
7
16.03
16:00
Weather
18°
0.3
7
16.03
17:00
Weather
20°
8
16.03
18:00
Weather
21°
0.5
10
16.03
19:00
Weather
21°
10

Temperature

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

Precipitation

7mm
0mm
01:00
0.1mm
02:00
1.5mm
03:00
0.2mm
04:00
1.3mm
05:00
0.2mm
06:00
1.1mm
07:00
0.1mm
08:00
0.1mm
12:00
2.7mm
13:00
7mm
14:00
0.8mm
15:00
0.3mm
16:00
0.3mm
18:00
0.5mm
20:00 07:00 19:00

Wind

10m/s
0m/s
20:00
5.2 m/s
21:00
5 m/s
22:00
5.7 m/s
23:00
5.9 m/s
00:00
6.1 m/s
01:00
6.1 m/s
02:00
6.8 m/s
03:00
6.8 m/s
04:00
6.3 m/s
05:00
7.1 m/s
06:00
6.4 m/s
07:00
5.4 m/s
08:00
5.5 m/s
09:00
6 m/s
10:00
6.3 m/s
11:00
7.3 m/s
12:00
7 m/s
13:00
6.6 m/s
14:00
7.3 m/s
15:00
7.3 m/s
16:00
6.9 m/s
17:00
7.8 m/s
18:00
9.7 m/s
19:00
10 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
23.4 km
54
18%

Measurement time: 2026-03-15 19:00

Calculated from PM2.5/PM10

O3
41.2 km
118.82 µg/m3
74.3%

Measurement time: 2026-03-15 20:25

source: OpenWeatherMap

PM2.5
23.4 km
14 µg/m3
16.7%

Measurement time: 2026-03-15 19:00

source: Aqicn

PM10
23.4 km
8 µg/m3
5.7%

Measurement time: 2026-03-15 19:00

source: Aqicn

NO2
23.4 km
3 µg/m3
1.5%

Measurement time: 2026-03-15 19:00

source: Aqicn

CO
41.2 km
0.13941 mg/m3
1%

Measurement time: 2026-03-15 20:25

source: OpenWeatherMap

SO2
41.2 km
0.9 µg/m3
0.3%

Measurement time: 2026-03-15 20:25

source: OpenWeatherMap

About Air Quality in Chillum

Air quality in Chillum 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 Chillum

  • 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 Chillum?

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 Chillum

If you're planning outdoor activities in Chillum, 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.