China · The summary is refreshed every 15 minutes.
November 12
The air is unhealthy for sensitive groups
Measured 05:00
Dandong
3°C
Fog
1023
hPaAtmospheric
pressure
100%
Humidity
Dandong, November 10, 2026: daily mean PM2.5 45 µg/m³ (4 sensors), level “Elevated” — as in the Atmy Data Hub. Now (06:00 local time): 39.0 µg/m³. Open methodology and data in JSON: Methodology and data sources · JSON
Right now in Dandong, PM2.5 averages 39.0 µg/m³ — “unhealthy for sensitive groups” on the US EPA scale (approximate, from hourly readings). Mean of 4 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: 40.5 µg/m³; range across sensors: 32.0–43.0 µg/m³.
In Dandong the air is unhealthy for sensitive groups 🟠 AQI 110. About the same as three hours ago. 🌫️ +3 °C · No precipitation · Wind 3 m/s
In Dandong 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 fell from 46.3 to 39.0 µg/m³. The highest hour was 22:00 with 56.3 µg/m³.
Cold weather (3°C) possibly means more heating, a common source of particles. High humidity (100%) possibly makes optical sensors read somewhat higher.
Weather now: fog, 3°C, wind 3 m/s, humidity 100%. By 11:00 the wind is expected to pick up to 5 m/s, which may clear the air. By 17:00 the temperature will be about 6°C.
Written automatically at 06:00 local time (22:00 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.
3 m/s
Wind, SSE
0 mm
Precipitation today
45 µg/m³ Elevated
Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 08:00–08:00 UTC+8): 45 µg/m³ from 4 sensors that passed the quality check — the same value as in the Atmy Data Hub.
34/100Low · An estimate of weather conditions · not a PM2.5 forecast
12°/2°
Index by time of day
55/100Moderate
Night
Morning
Day
Evening12°/2°
Index by time of day
51/100Moderate
NightMorningDayEvening10°/-1°
Index by time of day
50/100Moderate
NightMorningDayEvening8°/-2°
Index by time of day
54/100Moderate
NightMorningDayEvening7°/-2°
Index by time of day
38/100Moderate
NightMorningDayEvening5°/2°
Index by time of day
51/100Moderate
NightMorningDayEveningForecast of conditions that trap pollution near the surface
3°
Fog. Feels like -1°C
6°C98%
11°C61%3°C98%3m/sWind from the SSE
6m/sWind gusts
Wind force: 2
Gusts up to 12 m/s are expected.
China
12°C2°C
12°C2°C10°C-1°C8°C-2°C
7°C-2°C5°C2°C1°C-6°C-2°C-7°C2°C-6°C1°C-6°C
Highest current reading: 43.0 µg/m³ (民主桥 (中国环境监测总站 (CNEMC) — 国家城市环境空气质量监测网)). Lowest: 32.0 µg/m³ (元宝山 (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 — 4 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 Dandong 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): 45 µg/m³ from 4 sensors that passed the quality check — the same value as in the Atmy Data Hub. No. 23 of 100 cities in China and No. 58 of 676 worldwide, from the most polluted.
Right now in Dandong, PM2.5 averages 39.0 µg/m³ — “unhealthy for sensitive groups” on the US EPA scale (approximate, from hourly readings). Mean of 4 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: 40.5 µg/m³; range across sensors: 32.0–43.0 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: 43.0 µg/m³ (民主桥 (中国环境监测总站 (CNEMC) — 国家城市环境空气质量监测网)). Lowest: 32.0 µg/m³ (元宝山 (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
