Calamity
Live Map
MediumAir QualityCS: 29 · v5

Air Quality near Birgañj

NepalWorld Air Quality Index

Right now

Nothing else has been detected within 20 km in the last 24 hours.

Distance and hazards
Only these hazards

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One message per event, not per detection. We send a confirmation first, and every message carries a link to stop them. We store the address and the place, nothing else.

Reported by World Air Quality Index 2 days ago.

No stronger detection stands among the 11 recorded within 20 km of this point since 26 August 2026 — 10 others scored the same. The last comparable one was on 3 October 2026. 6 more were recorded here in the fortnight before it.

What the source measured

World Air Quality Index reported: AQI 158 (Unhealthy) at Simara, Nepal

The air quality index read 158 (Unhealthy) at the Simara, Nepal station.

At this point we have recorded a air quality index between 150 and 184, over 10 readings since 4 October 2026. Today's reading sits 24% of the way up that range.

Nearby, since 26 August 2026

How we know

One source: World Air Quality Index. Not yet confirmed by a second, independent source.

Our own score for this event is 29 out of 100.

This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.

Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.

Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.

This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.

Event data

TypeAir Quality
SeverityMedium
Calamity Score (ours)29 / 100
Legacy data-support index0.48/1
Coordinates27.1567, 84.9978
Nearest cityBirgañj (19 km)
Urban exposure index (PEI)0 within 5 km
Impact tierminor
Timestamp2026-10-04T11:57:00.000Z
Sourcehttps://aqicn.org/city/@10492
LicenceWAQI API terms · World Air Quality Index Project

Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.

Source and revision timeline

Source: waqi. Occurrence: 2026-10-04T11:57:00.000Z.

First archived: 2026-10-04T02:26:57.935Z. Material modification: 2026-10-04T12:17:51.114Z.

Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.

  1. 2026-10-04T12:17:51.114Z · data change

    Index 20 → 29.

  2. 2026-10-04T11:19:46.682Z · data change

    Index 29 → 20.

8 retained revisions changed source fields this page does not show; the index, severity and version stayed the same.

Score breakdown

65
intensity
0
Urban PEI term
0
Scenario weight
33
Recorded reference / batch anomaly

Technical details

Aqi158
AqiCategoryUnhealthy
StationNameSimara, Nepal
StationUid10492
Networkofficial

Safety information

What to do when the air is unhealthy

Three things first, then what each level of the index means. From the US EPA’s AirNow.

For this reportAir Quality · Birgañj

  1. Less effort outdoors

    Shorten or move indoors hard activity; the worse the index, the more people it concerns.

    AirNow

  2. Keep indoor air clean

    Windows closed when the air outside is worse, an air purifier if you have one.

    AirNow

  3. A real mask outside

    A well-fitting N95/FFP2 filters fine particles; cloth and surgical masks do little.

    AirNow

Before, during, after. Here it is “after”.

Before · When bad air is forecast

  • Follow the index

    Your local air quality index and forecast.

  • Medicines at hand

    If you have asthma or a heart or lung condition, keep your medicines with you.

AirNow (US EPA)

During · While the air is bad

  • Children, older people, the sick

    They are the first to reduce effort outdoors.

  • Watch for symptoms

    Coughing, breathlessness, chest pain: stop and get help if needed.

AirNow (US EPA)

After · When it improves

  • Air the house

    When the outside air is better than inside.

AirNow (US EPA)

If a life is in danger

Emergency numbers: Nepal

Questions people ask

What do the index levels mean?

0-50 good; 51-100 moderate; 101-150 unhealthy for sensitive groups; 151-200 unhealthy, for everyone; 201-300 very unhealthy; over 300 hazardous. Source: AirNow (US EPA).

Who are the sensitive groups?

People with heart or lung disease, older adults, children and teenagers, pregnant women and people who work or exercise outdoors. Source: AirNow (US EPA).

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