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Siwān (Bihar) (IN)

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
22°C
Partly cloudy
Humidity
79.7%
Wind
1 m/s
Pressure
1009.1 hPa
Direction
26°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
19° / 23°
Precip.
12.8mm
Max wind
4.3 m/s

Hourly Forecast

20.03
Now
Weather
22°
20.03
15:00
Weather
21°
20.03
16:00
Weather
20°
20.03
17:00
Weather
20°
20.03
18:00
Weather
20°
20.03
19:00
Weather
20°
20.03
20:00
Weather
20°
20.03
21:00
Weather
20°
0.1
20.03
22:00
Weather
20°
3.2
20.03
23:00
Weather
19°
1.5
21.03
00:00
Weather
19°
1
21.03
01:00
Weather
19°
1.5
21.03
02:00
Weather
19°
0.3
21.03
03:00
Weather
20°
0.3
21.03
04:00
Weather
21°
0.3
21.03
05:00
Weather
21°
0.3
21.03
06:00
Weather
22°
0.4
21.03
07:00
Weather
23°
2.7
21.03
08:00
Weather
21°
1
21.03
09:00
Weather
20°
0.2
21.03
10:00
Weather
21°
21.03
11:00
Weather
22°
21.03
12:00
Weather
21°
21.03
13:00
Weather
20°

Temperature

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

Precipitation

3.2mm
0mm
21:00
0.1mm
22:00
3.2mm
23:00
1.5mm
00:00
1mm
01:00
1.5mm
02:00
0.3mm
03:00
0.3mm
04:00
0.3mm
05:00
0.3mm
06:00
0.4mm
07:00
2.7mm
08:00
1mm
09:00
0.2mm
14:00 01:00 13:00

Wind

4.3m/s
0m/s
14:00
1.3 m/s
15:00
0.8 m/s
16:00
0.9 m/s
17:00
1.1 m/s
18:00
2.3 m/s
19:00
2.4 m/s
20:00
1.7 m/s
21:00
4.3 m/s
22:00
2.5 m/s
23:00
3.5 m/s
00:00
1 m/s
01:00
1.6 m/s
02:00
2.1 m/s
03:00
1.9 m/s
04:00
2 m/s
05:00
1.6 m/s
06:00
0.9 m/s
07:00
1.6 m/s
08:00
2.8 m/s
09:00
2.8 m/s
10:00
2.8 m/s
11:00
2.2 m/s
12:00
1.2 m/s
13:00
0.4 m/s
14:00 01:00 13:00

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
70.8 km
223
74.3%

Measurement time: 2026-03-20 13:30

Calculated from PM2.5/PM10

PM2.5
70.8 km
173 µg/m3
206%

Measurement time: 2026-03-20 13:30

source: Aqicn

PM10
70.8 km
114 µg/m3
81.4%

Measurement time: 2026-03-20 13:30

source: Aqicn

NO2
98.5 km
18.9 µg/m3
9.5%

Measurement time: 2026-03-20 12:30

source: Aqicn

O3
98.5 km
11.7 µg/m3
7.3%

Measurement time: 2026-03-20 12:30

source: Aqicn

SO2
84.4 km
15.2 µg/m3
4.3%

Measurement time: 2026-03-20 14:30

source: Aqicn

CO
98.5 km
0.0067 mg/m3
0%

Measurement time: 2026-03-20 12:30

source: Aqicn

Info


Country: India
Region: Bihar
Latitude: 26.22096
Longitude: 84.35609

Cities in the area:


Solar Energy

Night
0 W/m²
Solar Radiation
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Calculate energy production for Siwān

About Air Quality in Siwān

Air quality in Siwān 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 Siwān

  • 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 Siwān?

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 Siwān

If you're planning outdoor activities in Siwān, 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.