China · The summary is refreshed every 15 minutes.
November 12
The air is unhealthy for sensitive groups
Measured 05:00
Hengyang
12°C
Cloudy
1023
hPaAtmospheric
pressure
67%
Humidity
Hengyang, November 10, 2026: daily mean PM2.5 18 µg/m³ (6 sensors), level “Moderate” — as in the Atmy Data Hub. Now (06:00 local time): 40.0 µg/m³. Open methodology and data in JSON: Methodology and data sources · JSON
Right now in Hengyang, PM2.5 averages 40.0 µg/m³ — “unhealthy for sensitive groups” on the US EPA scale (approximate, from hourly readings). Mean of 6 sensors from Government stations, readings from 05:00–05:00 local time (21:00–21:00 UTC), summary prepared at 06:00 local time. Median: 38.0 µg/m³; range across sensors: 31.0–57.0 µg/m³.
In Hengyang the air is unhealthy for sensitive groups 🟠 AQI 112. About the same as three hours ago. ☁️ +12 °C · No precipitation · Wind 1 m/s
In Hengyang the air is unhealthy for sensitive groups right now (approximate, US EPA scale). From 17:00 to 06:00 local time the city mean PM2.5 rose from 17.0 to 40.0 µg/m³.
Light wind (1 m/s) in the evening or at night, as the air cools, possibly traps particles near the ground (a temperature inversion).
Weather now: cloudy, 12°C, wind 1 m/s, humidity 67%. No major change in the wind is expected in the coming hours. By 17:00 the temperature will be about 16°C.
Written automatically at 06:00 local time (22:00 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.
1 m/s
Wind, NW
0 mm
Precipitation today
18 µg/m³ Moderate
Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 08:00–08:00 UTC+8): 18 µg/m³ from 6 sensors that passed the quality check — the same value as in the Atmy Data Hub.
Monthly means of quality-checked sensors, as in the Data Hub trend; the current month is still incomplete, “-” means no data.
36/100Moderate · An estimate of weather conditions · not a PM2.5 forecast
17°/12°
Index by time of day
51/100Moderate
Night
Morning
Day
Evening17°/13°
Index by time of day
56/100Moderate
NightMorningDayEvening22°/14°
Index by time of day
53/100Moderate
NightMorningDayEvening22°/13°
Index by time of day
61/100Moderate
NightMorningDayEvening21°/17°
Index by time of day
57/100Moderate
NightMorningDayEvening18°/14°
Index by time of day
37/100Moderate
NightMorningDayEveningForecast of conditions that trap pollution near the surface
12°
Cloudy. Feels like 11°C
14°C65%17°C55%14°C80%1m/sWind from the NW
2m/sWind gusts
Wind force: 1
Light wind is expected over the next few hours.
China
17°C12°C
17°C13°C
22°C14°C22°C13°C21°C17°C18°C14°C19°C11°C16°C8°C17°C7°C17°C9°C
Highest current reading: 57.0 µg/m³ (市委党校 (中国环境监测总站 (CNEMC) — 国家城市环境空气质量监测网)). Lowest: 31.0 µg/m³ (珠晖区环保局 (中国环境监测总站 (CNEMC) — 国家城市环境空气质量监测网)). The list shows every sensor, highest first.
Source: atmy.ai monitoring network
Sensors in the summary by network: Government stations — 6 sensors.
Atmy shows the networks’ readings after the Data Hub’s quality check: test devices and sensors that fail it are left out.
1,515
ChongqingChina
32BeijingChina
24ShanghaiChina
19Cities with the most sensors
All sensors on the map, by city as the map assigns them; the city’s values count only the sensors that pass the Data Hub’s quality check.
Daily mean PM2.5 of the city sensors, µg/m³
Click a day to see its date and value.
An Atmy card with the air quality in Hengyang now: it is refreshed every 15 minutes and links to this page. Paste the code into your site.
China · City ranking · All pilot cities
Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 08:00–08:00 UTC+8): 18 µg/m³ from 6 sensors that passed the quality check — the same value as in the Atmy Data Hub.
Right now in Hengyang, PM2.5 averages 40.0 µg/m³ — “unhealthy for sensitive groups” on the US EPA scale (approximate, from hourly readings). Mean of 6 sensors from Government stations, readings from 05:00–05:00 local time (21:00–21:00 UTC), summary prepared at 06:00 local time. Median: 38.0 µg/m³; range across sensors: 31.0–57.0 µg/m³.
The current level is “unhealthy for sensitive groups” (US EPA scale, approximate). Children, older adults and people with heart or lung disease should reduce prolonged or heavy exertion outdoors. This is the standard guidance of the scale, not medical advice.
Highest current reading: 57.0 µg/m³ (市委党校 (中国环境监测总站 (CNEMC) — 国家城市环境空气质量监测网)). Lowest: 31.0 µg/m³ (珠晖区环保局 (中国环境监测总站 (CNEMC) — 国家城市环境空气质量监测网)). The list shows every sensor, highest first.
From Atmy sensors and connected public networks (citizen, experimental and government monitors), aggregated by Atmy. Values are approximate; see the methodology.
The summary is rebuilt every 15 minutes from the latest reading of each sensor, each no older than one hour.
The daily value is the Data Hub’s: the mean of the city’s sensors that passed the nightly quality check, each with at least 12 valid hours, and only with sensors at four places 500 m apart; days are UTC.
“Now” uses the same sensors and rule: the mean of their latest readings, each at most 60 minutes old, shown only with sensors at four places 500 m apart reporting.
Source: public Atmy monitoring data. Methodology and data sources · Data terms
