Air quality
Air quality in Leiyang today
Updated
Moderate (US AQI 94) Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. Model estimate for Mon, Oct 26, 8:00 am (00:00 UTC).
Live AQI, PM2.5, PM10 and ozone for Leiyang, Hunan, China, with a 48-hour forecast and the best time to be outside.
- US AQI now
- 94 Moderate
- PM2.5
- 54 µg/m³ 3.6× WHO 24-h guideline
- PM10
- 55 µg/m³
- Ozone
- 35 µg/m³
- Dominant pollutant
- PM2.5 sub-index 94
- Best hour today
- 8:00 am AQI 94
- European AQI
- 62
Air quality in Leiyang right now
Right now the modelled US Air Quality Index for Leiyang, Hunan, China is 94, 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 94. 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 54 µg/m³, 3.6 times the WHO 24-hour guideline of 15 µg/m³; PM10 is 55 µg/m³ against a guideline of 45; ozone is 35 µg/m³ (below the WHO 8-hour level of 100); nitrogen dioxide is 25 µg/m³ (right at the 24-hour guideline of 25).
Also this hour: UV index 0.8, carbon monoxide 963 µg/m³.
Leiyang AQI forecast: next 48 hours
Over the next 24 hours the AQI is forecast to range from 83 around Tue 8:00 am to 97 around Mon 11:00 am, staying "Moderate" throughout.
The following day looks similar, averaging about 89.
| Local time (Asia/Shanghai) | US AQI | Category | PM2.5 µg/m³ | PM10 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Mon 8:00 am | 94 | Moderate | 54 | 55 | 35 |
| Mon 11:00 am | 97 | Moderate | 27 | 29 | 105 |
| Mon 2:00 pm | 96 | Moderate | 14.6 | 18 | 125 |
| Mon 5:00 pm | 95 | Moderate | 13.6 | 17 | 110 |
| Mon 8:00 pm | 94 | Moderate | 20.9 | 23 | 67 |
| Mon 11:00 pm | 92 | Moderate | 23.2 | 25 | 53 |
| Tue 2:00 am | 89 | Moderate | 29.9 | 31 | 46 |
| Tue 5:00 am | 87 | Moderate | 33.9 | 35 | 39 |
| Tue 8:00 am | 83 | Moderate | 36.7 | 37 | 34 |
| Tue 11:00 am | 80 | Moderate | 22.6 | 24 | 99 |
| Tue 2:00 pm | 80 | Moderate | 20.5 | 23 | 137 |
| Tue 5:00 pm | 82 | Moderate | 28.6 | 30 | 118 |
| Tue 8:00 pm | 86 | Moderate | 46.6 | 48 | 67 |
| Tue 11:00 pm | 93 | Moderate | 48.5 | 49 | 40 |
| Wed 2:00 am | 98 | Moderate | 47.1 | 48 | 24 |
| Wed 5:00 am | 102 | Unhealthy for Sensitive Groups | 46 | 46 | 14 |
| Wed 8:00 am | 106 | Unhealthy for Sensitive Groups | 49.1 | 50 | 22 |
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 Leiyang today
Between 6 am and 9 pm local time, the cleanest air today is forecast around 8:00 am (AQI 94, Moderate) and the worst around 11:00 am (AQI 97). The difference across the day is small, so timing matters little.
Leiyang vs the rest of China
Across 447 China cities we track, the average US AQI right now is 85 (Moderate). Leiyang at 94 is 9 points worse than average.
For context, the median across 3,556 cities worldwide is 58.
Air quality in cities near Leiyang
| City | Distance | US AQI | Category | PM2.5 µg/m³ |
|---|---|---|---|---|
| Hengyang | 59 km | 103 | Unhealthy for Sensitive Groups | 58.4 |
| Chenzhou | 69 km | 132 | Unhealthy for Sensitive Groups | 88.5 |
| Wuxi, Hunan | 102 km | 117 | Unhealthy for Sensitive Groups | 66.6 |
| Yongzhou | 124 km | 118 | Unhealthy for Sensitive Groups | 62.9 |
| Xiangtan | 161 km | 127 | Unhealthy for Sensitive Groups | 53.7 |
| Zhuzhou | 162 km | 132 | Unhealthy for Sensitive Groups | 66.6 |
| Shaoyang | 167 km | 141 | Unhealthy for Sensitive Groups | 86.6 |
| Pingxiang | 167 km | 67 | Moderate | 28 |
Model vs measured
We found no measured PM2.5 sensor cell within 25 km of Leiyang, 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 54 µg/m³ in the next 24 hours while NASA satellites detected 47 fire hotspots within 300 km in the last day (nearest about 33 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 94, 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 Leiyang
Air quality elsewhere
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS), NASA FIRMS.