Air quality
Air quality in Hāthazāri today
Updated
Moderate (US AQI 90) Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. Model estimate for Mon, Oct 26, 8:00 am (02:00 UTC).
Live AQI, PM2.5, PM10 and ozone for Hāthazāri, Chittagong, Bangladesh, with a 48-hour forecast and the best time to be outside.
- US AQI now
- 90 Moderate
- PM2.5
- 21 µg/m³ 1.4× WHO 24-h guideline
- PM10
- 21 µg/m³
- Ozone
- 80 µg/m³
- Dominant pollutant
- PM2.5 sub-index 90
- Best hour today
- 7:00 pm AQI 80
- European AQI
- 43
Air quality in Hāthazāri right now
Right now the modelled US Air Quality Index for Hāthazāri, Chittagong, Bangladesh is 90, which falls in the "Moderate" band (up to 100). Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors.
The index is driven mainly by PM2.5, whose own sub-index is 90. Fine and coarse particles come from traffic, heating, industry, dust and smoke; they build up on calm nights and clear when wind or rain arrives.
PM2.5 is 21 µg/m³, 1.4 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 21 µg/m³ against a guideline of 45; ozone is 80 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 14 µg/m³ (below the 24-hour guideline of 25).
Also this hour: UV index 2, carbon monoxide 406 µg/m³.
Hāthazāri AQI forecast: next 48 hours
Over the next 24 hours the AQI is forecast to range from 77 around Tue 12:00 am to 92 around Mon 5:00 pm, staying "Moderate" throughout.
The following day looks similar, averaging about 85.
| Local time (Asia/Dhaka) | US AQI | Category | PM2.5 µg/m³ | PM10 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Mon 8:00 am | 90 | Moderate | 20.8 | 21 | 80 |
| Mon 11:00 am | 87 | Moderate | 11.7 | 12 | 135 |
| Mon 2:00 pm | 84 | Moderate | 10.1 | 10 | 146 |
| Mon 5:00 pm | 92 | Moderate | 15.4 | 16 | 90 |
| Mon 8:00 pm | 80 | Moderate | 31.5 | 32 | 44 |
| Mon 11:00 pm | 78 | Moderate | 36.8 | 37 | 34 |
| Tue 2:00 am | 77 | Moderate | 41 | 42 | 24 |
| Tue 5:00 am | 80 | Moderate | 49.6 | 50 | 3 |
| Tue 8:00 am | 85 | Moderate | 33.5 | 34 | 91 |
| Tue 11:00 am | 87 | Moderate | 14.7 | 15 | 138 |
| Tue 2:00 pm | 88 | Moderate | 14 | 14 | 152 |
| Tue 5:00 pm | 105 | Unhealthy for Sensitive Groups | 21.1 | 21 | 108 |
| Tue 8:00 pm | 89 | Moderate | 21.7 | 22 | 72 |
| Tue 11:00 pm | 86 | Moderate | 15.7 | 16 | 37 |
| Wed 2:00 am | 80 | Moderate | 13.7 | 14 | 19 |
| Wed 5:00 am | 73 | Moderate | 14.2 | 14 | 9 |
| Wed 8:00 am | 66 | Moderate | 12.5 | 13 | 60 |
Every third hour of the CAMS forecast via Open-Meteo. US AQI uses rolling averages (24 h for particles, 8 h for ozone), so it moves more slowly than the hourly concentrations.
Best time to be outside in Hāthazāri today
Between 6 am and 9 pm local time, the cleanest air today is forecast around 7:00 pm (AQI 80, Moderate) and the worst around 5:00 pm (AQI 92). That is a swing of 12 points, so a run or walk around 7:00 pm is noticeably better.
Hāthazāri vs the rest of Bangladesh
Across 26 Bangladesh cities we track, the average US AQI right now is 122 (Unhealthy for Sensitive Groups). Hāthazāri at 90 is 32 points cleaner than average.
It ranks 2 of 26 from cleanest to most polluted; the cleanest is Chattogram (96) and the most polluted Nagar Naluākot (151).
For context, the median across 3,909 cities worldwide is 57.
Air quality in cities near Hāthazāri
| City | Distance | US AQI | Category | PM2.5 µg/m³ |
|---|---|---|---|---|
| Chattogram | 19 km | 96 | Moderate | 30.2 |
| Udaipur, Tripura | 119 km | 90 | Moderate | 24.5 |
| Rāipur, Chittagong | 123 km | 133 | Unhealthy for Sensitive Groups | 63.1 |
| Comilla | 124 km | 140 | Unhealthy for Sensitive Groups | 46.9 |
| Agartala | 158 km | 131 | Unhealthy for Sensitive Groups | 53.8 |
| Aizawl | 165 km | 59 | Moderate | 12.3 |
| Sonārgaon | 177 km | 123 | Unhealthy for Sensitive Groups | 54.7 |
| Brāhmanbāria | 178 km | 131 | Unhealthy for Sensitive Groups | 53.8 |
Model vs measured
We found no measured PM2.5 sensor cell within 25 km of Hāthazāri, so the numbers on this page are model estimates. Models capture regional pollution well but can miss very local sources such as a busy road or a nearby fire.
Wildfire smoke
PM2.5 is forecast to reach 50 µg/m³ in the next 24 hours while NASA satellites detected 1 fire hotspot within 300 km in the last day (nearest about 166 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 90, most people are fine outdoors. If you are unusually sensitive to PM2.5, keep long or intense workouts to the cleaner hours shown above.
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 Hāthazāri
Air quality elsewhere
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS), NASA FIRMS.