Air quality
Air quality in Quảng Ngãi today
Updated
Moderate (US AQI 75) Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. Model estimate for Mon, Oct 26, 1:00 am (18:00 UTC).
Live AQI, PM2.5, PM10 and ozone for Quảng Ngãi, Quang Ngai, Vietnam, with a 48-hour forecast and the best time to be outside.
- US AQI now
- 75 Moderate
- PM2.5
- 27 µg/m³ 1.8× WHO 24-h guideline
- PM10
- 31 µg/m³
- Ozone
- 50 µg/m³
- Dominant pollutant
- PM2.5 sub-index 75
- Best hour today
- 6:00 am AQI 73
- European AQI
- 47
Air quality in Quảng Ngãi right now
Right now the modelled US Air Quality Index for Quảng Ngãi, Quang Ngai, Vietnam is 75, 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 75. 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 27 µg/m³, 1.8 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 31 µg/m³ against a guideline of 45; ozone is 50 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 13 µg/m³ (below the 24-hour guideline of 25).
Also this hour: carbon monoxide 433 µg/m³.
Quảng Ngãi AQI forecast: next 48 hours
Over the next 24 hours the AQI is forecast to range from 73 around Mon 4:00 am to 76 around Mon 1:00 pm, staying "Moderate" throughout.
The following day is expected to be cleaner, averaging about 66 against 75 for the next 24 hours.
| Local time (Asia/Ho_Chi_Minh) | US AQI | Category | PM2.5 µg/m³ | PM10 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Mon 1:00 am | 75 | Moderate | 27.4 | 31 | 50 |
| Mon 4:00 am | 73 | Moderate | 28.9 | 33 | 66 |
| Mon 7:00 am | 73 | Moderate | 35.3 | 37 | 67 |
| Mon 10:00 am | 75 | Moderate | 20.2 | 24 | 121 |
| Mon 1:00 pm | 76 | Moderate | 15.4 | 19 | 122 |
| Mon 4:00 pm | 75 | Moderate | 12.1 | 15 | 108 |
| Mon 7:00 pm | 74 | Moderate | 18.7 | 23 | 86 |
| Mon 10:00 pm | 75 | Moderate | 21.4 | 25 | 71 |
| Tue 1:00 am | 74 | Moderate | 18.1 | 21 | 68 |
| Tue 4:00 am | 72 | Moderate | 16.5 | 19 | 65 |
| Tue 7:00 am | 68 | Moderate | 15.6 | 18 | 71 |
| Tue 10:00 am | 65 | Moderate | 15.5 | 19 | 117 |
| Tue 1:00 pm | 65 | Moderate | 14.1 | 18 | 116 |
| Tue 4:00 pm | 64 | Moderate | 10.7 | 14 | 90 |
| Tue 7:00 pm | 64 | Moderate | 11.1 | 14 | 62 |
| Tue 10:00 pm | 61 | Moderate | 12.8 | 15 | 60 |
| Wed 1:00 am | 59 | Moderate | 10 | 12 | 64 |
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 Quảng Ngãi today
Between 6 am and 9 pm local time, the cleanest air today is forecast around 6:00 am (AQI 73, Moderate) and the worst around 1:00 pm (AQI 76). The difference across the day is small, so timing matters little.
Quảng Ngãi vs the rest of Vietnam
Across 68 Vietnam cities we track, the average US AQI right now is 82 (Moderate). Quảng Ngãi at 75 is 7 points cleaner than average.
It ranks 34 of 68 from cleanest to most polluted; the cleanest is Phu Quoc (38) and the most polluted Hạ Long (125).
For context, the median across 3,909 cities worldwide is 57.
Air quality in cities near Quảng Ngãi
| City | Distance | US AQI | Category | PM2.5 µg/m³ |
|---|---|---|---|---|
| Điện Bàn | 103 km | 70 | Moderate | 12.5 |
| Hải Châu | 113 km | 70 | Moderate | 12.5 |
| Hòa Cường | 122 km | 70 | Moderate | 12.5 |
| Da Nang | 122 km | 70 | Moderate | 12.5 |
| Thanh Khê | 124 km | 70 | Moderate | 12.5 |
| An Nhơn | 141 km | 61 | Moderate | 15 |
| Qui Nhon | 156 km | 66 | Moderate | 17.5 |
| Huế | 197 km | 79 | Moderate | 22.4 |
Model vs measured
We found no measured PM2.5 sensor cell within 25 km of Quảng Ngãi, 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 35 µg/m³ in the next 24 hours while NASA satellites detected 329 fire hotspots within 300 km in the last day (nearest about 10 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 75, 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 Quảng Ngãi
Air quality elsewhere
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS), NASA FIRMS.