Air quality
Air quality in Hengyang today
Updated
Unhealthy for Sensitive Groups (US AQI 106) People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. Model estimate for Mon, Oct 26, 3:33 am (19:33 UTC).
Live AQI, PM2.5, PM10 and ozone for Hengyang, Hunan, China, with a 48-hour forecast and the best time to be outside.
- US AQI now
- 106 Unhealthy for Sensitive Groups
- PM2.5
- 53 µg/m³ 3.5× WHO 24-h guideline
- PM10
- 53 µg/m³
- Ozone
- 37 µg/m³
Air quality in Hengyang right now
Right now the modelled US Air Quality Index for Hengyang, Hunan, China is 106, which falls in the "Unhealthy for Sensitive Groups" band (up to 150). People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors.
PM2.5 is 53 µg/m³, 3.5 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 53 µg/m³ against a guideline of 45; ozone is 37 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 31 µg/m³ (above the 24-hour guideline of 25).
Hengyang vs the rest of China
Across 467 China cities we track, the average US AQI right now is 84 (Moderate). Hengyang at 106 is 22 points worse than average.
It ranks 374 of 467 from cleanest to most polluted; the cleanest is Hulunbuir (20) and the most polluted Artux (256).
For context, the median across 3,909 cities worldwide is 56.
Air quality in cities near Hengyang
| City | Distance | US AQI | Category | PM2.5 µg/m³ |
|---|---|---|---|---|
| Wuxi, Hunan | 83 km | 120 | Unhealthy for Sensitive Groups | 56.1 |
| Xiangtan | 110 km | 128 | Unhealthy for Sensitive Groups | 46.1 |
| Loudi | 112 km | 133 | Unhealthy for Sensitive Groups | 56.7 |
| Yongzhou | 113 km | 121 | Unhealthy for Sensitive Groups | 54.9 |
| Zhuzhou | 117 km | 120 | Unhealthy for Sensitive Groups | 64 |
| Shaoyang | 121 km | 137 | Unhealthy for Sensitive Groups | 69.6 |
| Chenzhou | 128 km | 118 | Unhealthy for Sensitive Groups | 91.7 |
| Pingxiang | 146 km | 85 | Moderate | 26 |
Model vs measured
We found no measured PM2.5 sensor cell within 25 km of Hengyang, 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 53 µg/m³ in the next 24 hours while NASA satellites detected 17 fire hotspots within 300 km in the last day (nearest about 25 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 106, 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 Hengyang
Air quality elsewhere
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS), NASA FIRMS.