SmogRank / Countries / India / Bihar
Most polluted cities in Bihar, India
6 measured cities, last 30 days; 6 above the WHO 24-hour guideline. Worst: Arāria at 35.4 µg/m³, #60 in the world.
6 moderate
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
Estimated: cities without a monitor
Bihar cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Darbhanga | ≈ 24 µg/m³ |
| Dinapur Nizamat | ≈ 24 µg/m³ |
| Dinapore | ≈ 24 µg/m³ |
| Madhurampur Dehri | ≈ 19 µg/m³ |
| Bagaha | ≈ 23 µg/m³ |
| Jamālpur | ≈ 19 µg/m³ |
| Jahānābād | ≈ 25 µg/m³ |
| Luckeesarai | ≈ 23 µg/m³ |
| Nawāda | ≈ 20 µg/m³ |
| Bagaha | ≈ 16 µg/m³ |
| Jamūī | ≈ 16 µg/m³ |
| Bāruni | ≈ 22 µg/m³ |
| Phulwari Sharif | ≈ 24 µg/m³ |
| Madhubani | ≈ 30 µg/m³ |
| Benipur | ≈ 24 µg/m³ |
| Barauni | ≈ 22 µg/m³ |
| Bihāt | ≈ 22 µg/m³ |
| Sītāmarhi | ≈ 29 µg/m³ |
| Gopālganj | ≈ 27 µg/m³ |
| Supaul | ≈ 22 µg/m³ |
| Sheikhpura | ≈ 23 µg/m³ |
| Bārh | ≈ 23 µg/m³ |
| Mokameh | ≈ 23 µg/m³ |
| Bangaon | ≈ 22 µg/m³ |
| Masaurhi Buzurg | ≈ 24 µg/m³ |
| Teghra | ≈ 22 µg/m³ |
| Raxaul | ≈ 27 µg/m³ |
| Madhepura | ≈ 23 µg/m³ |
| Dumraon | ≈ 24 µg/m³ |
| Sultānganj | ≈ 19 µg/m³ |
| Daudnagar | ≈ 24 µg/m³ |
| Arwal | ≈ 23 µg/m³ |
| Khagaul | ≈ 24 µg/m³ |
| Hilsa | ≈ 24 µg/m³ |
| Fatwa | ≈ 24 µg/m³ |
| Forbesganj | ≈ 30 µg/m³ |
| Bhabhua | ≈ 21 µg/m³ |
| Khagaria | ≈ 20 µg/m³ |
| Narkatiāganj | ≈ 21 µg/m³ |
| Naugachhia | ≈ 18 µg/m³ |
Updated 2026-10-01 21:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.