Air quality
Air quality in Dhāka, Bihar today
Updated
Unhealthy (US AQI 179) Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. Model estimate for Mon, Oct 26, 4:20 am (22:50 UTC).
Live AQI, PM2.5, PM10 and ozone for Dhāka, Bihar, India, with a 48-hour forecast and the best time to be outside.
- US AQI now
- 179 Unhealthy
- PM2.5
- 124 µg/m³ 8.3× WHO 24-h guideline
- PM10
- 128 µg/m³
- Ozone
- 23 µg/m³
Air quality in Dhāka, Bihar right now
Right now the modelled US Air Quality Index for Dhāka, Bihar, India is 179, which falls in the "Unhealthy" band (up to 200). Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed.
PM2.5 is 124 µg/m³, 8.3 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 128 µg/m³ against a guideline of 45; ozone is 23 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 37 µg/m³ (above the 24-hour guideline of 25).
Dhāka, Bihar vs the rest of India
Across 245 India cities we track, the average US AQI right now is 116 (Unhealthy for Sensitive Groups). Dhāka, Bihar at 179 is 63 points worse than average.
It ranks 242 of 245 from cleanest to most polluted; the cleanest is Dindigul (25) and the most polluted Karnāl (440).
For context, the median across 3,556 cities worldwide is 58.
Air quality in cities near Dhāka, Bihar
| City | Distance | US AQI | Category | PM2.5 µg/m³ |
|---|---|---|---|---|
| Muzaffarpur | 65 km | 160 | Unhealthy | 106.2 |
| Darbhanga | 93 km | 153 | Unhealthy | 85.2 |
| Pātan | 112 km | 93 | Moderate | 40 |
| Kathmandu | 115 km | 93 | Moderate | 40 |
| Patna | 120 km | 156 | Unhealthy | 99.2 |
| Bharatpur | 133 km | 94 | Moderate | 45.6 |
| Bihār Sharīf | 168 km | 151 | Unhealthy | 76.1 |
| Gorakhpur | 179 km | 171 | Unhealthy | 127.1 |
Model vs measured
The nearest measured PM2.5 reading is 53 µg/m³ from Sensor.Community (median of 11 sensors), centred about 15 km from the city centre. That is 71.4 µg/m³ below the model estimate of 124 µg/m³. Low-cost sensors can read high in humid air; reference monitors are more accurate but sparser.
Wildfire smoke
PM2.5 is forecast to reach 124 µg/m³ in the next 24 hours while NASA satellites detected 69 fire hotspots within 300 km in the last day (nearest about 46 km away). Smoke is a likely contributor: keep windows closed, run an air purifier or HVAC filter, and check the fire map before heading out.
Advice for sensitive groups
At 179, children, older adults, pregnant people and anyone with asthma, COPD or heart disease should limit time outdoors, especially strenuous activity. A well-fitted N95/FFP2 mask cuts particle exposure; it does not filter ozone.
What the US AQI numbers mean
| US AQI | Category | What it means |
|---|---|---|
| 0-50 | Good | Air quality is satisfactory and poses little or no risk; a good time for outdoor activity. |
| 51-100 | Moderate | Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. |
| 101-150 | Unhealthy for Sensitive Groups | People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. |
| 151-200 | Unhealthy | Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. |
| 201-300 | Very Unhealthy | Health alert: everyone should avoid prolonged or heavy exertion outdoors, and sensitive groups should stay indoors. |
| 301-500 | Hazardous | Emergency conditions: everyone should avoid all outdoor physical activity and stay indoors with filtered air if possible. The scale tops out at 500; heavier dust or smoke is shown as 500. |
Values on this page are modelled by CAMS (Copernicus) and served by Open-Meteo; they are estimates for the area around the city centre, not readings from an official monitor.
Nearby cities
More for Dhāka
Air quality elsewhere
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS), Sensor.Community, NASA FIRMS.