CPCB

Siwan Air Quality Index & Realtime Air Pollution

Lat: 26.2210 · Lon: 84.3561
Elevation: m · Offset: 19800s
AQI Score & Core Metrics
164
Unhealthy(US-AQI standard)
050100150200300500
Good (0-50)Moderate (51-100)Poor (101-150)Unhealthy (151-200)Severe (201-300)Hazardous (301+)
PM2.576.8 µg/m³
PM10179.7 µg/m³
Weather & Climate Summary

Current Conditions

33°C

Humidity: 70%

UV Index0.75
Wind Speed6 km/h

Primary Air Pollutants Siwan (Bihar)

PollutantConcentrationDetails
PM2.577 µg/m³Fine particles
PM10180 µg/m³Coarse particles
SO₂8 µg/m³Sulphur dioxide
CO321 µg/m³Carbon monoxide
NO₂5 µg/m³Nitrogen dioxide
O₃152 µg/m³Ozone

Hourly forecast Siwan (Bihar)

TimeTempCondition
Now32°CThunderstormThunderstorm
18:0031°COvercastOvercast
19:0030°CPartly cloudyPartly cloudy
20:0028°CThunderstormThunderstorm
21:0027°CThunderstormThunderstorm
22:0028°CLight drizzleLight drizzle
23:0028°COvercastOvercast
00:0028°COvercastOvercast
01:0027°COvercastOvercast
02:0027°COvercastOvercast
03:0027°COvercastOvercast
04:0027°COvercastOvercast
05:0027°CLight drizzleLight drizzle
06:0027°COvercastOvercast
07:0029°CLight drizzleLight drizzle
08:0030°COvercastOvercast
09:0031°CThunderstormThunderstorm
10:0032°CThunderstormThunderstorm
11:0032°CThunderstormThunderstorm
12:0032°CThunderstorm with slight hailThunderstorm with slight hail
13:0032°CThunderstorm with slight hailThunderstorm with slight hail
14:0031°CThunderstorm with slight hailThunderstorm with slight hail
15:0031°CThunderstorm with slight hailThunderstorm with slight hail
16:0030°CThunderstorm with slight hailThunderstorm with slight hail

Health Recommendations

Based on current air quality: Unhealthy · AQI 164

Unhealthy
  • Air PurifierTurn On
  • Car FilterMust
  • N95 MaskMust
  • Stay IndoorMust
Outdoor Activity Guidelines

Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects. Active children, adults, and people with respiratory diseases should avoid prolonged outdoor exertion.

Standard: US EPA AQI ScaleUpdated: Live
Cigarette Equivalent

3.5 per day

Equates to breathing local air

Weekly Exposure

24.5 cigarettes

Monthly Exposure

105 cigarettes

Risk Assessments

Prevent Health Problems

High RiskHeadaches

Risk is High for Unhealthy conditions (AQI 164).

Common Symptoms

You may observe: Pressure or tightness around the forehead and temples, Sensitivity to light or smell, Fatigue or difficulty concentrating.

Do's
  • Choose indoor, clean indoor air when the AQI is elevated.
  • Stay hydrated and take short breaks from devices or harsh light if you are migraine-prone.
  • If you Make use of prescribed migraine meds, Keep close them accessible.
Don'ts
  • Try not to do intense outdoor exercise during worse AQI periods.
  • Don’t ignore worsening symptoms that feel unusual for you.
AQI Graph

Historical AQI Data Siwan (Bihar)

152
Min. AQIat 12:00 PM on 13th Jul
162
Max. AQIat 4:00 AM on 14th Jul
13-07-2026Time14-07-2026

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Air Quality FAQs at Siwan, Bihar

The current real-time AQI (US) level in Siwan, Bihar is 164 (Unhealthy). This was last updated recently.

The best AQI (US) level was generally lower during the early afternoon in the last 24 hours.

The worst AQI (US) level typically peaks during early morning or late evening hours due to temperature inversion.

The AQI (US) levels in Siwan, Bihar have been fluctuating throughout the last 24 hours depending on traffic and weather conditions.

Current AQI (US) levels are unhealthy for everyone. It's advised to adjust your outdoor activities based on personal sensitivity.