Shiyan air quality now

China · The summary is refreshed every 15 minutes.

Now

No current value: fewer than four sensors at different places are reporting now.

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Open methodology and data in JSON: Methodology and data sources · JSON

In Shiyan the air is moderate right now (approximate, US EPA scale). From 17:00 to 03:00 local time the city mean PM2.5 rose from 17.7 to 23.0 µg/m³. The highest hour was 22:00 with 29.3 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, 8°C, wind 1 m/s, humidity 84%. 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 05:13 local time (21:13 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.

1 m/s

Wind, ESE

0 mm

Precipitation today

Pollution accumulation index now

40/100Moderate · An estimate of weather conditions · not a PM2.5 forecast

Now4053
06.0014.0021.0005.00

Pollution accumulation forecast

Today — November 12

19°/7°

Index by time of day

53/100Moderate

  1. 53/100Night
  2. 41/100Morning
  3. 9/100Day
  4. 26/100Evening

Friday — November 13

20°/9°

Index by time of day

53/100Moderate

  1. 53/100Night
  2. 41/100Morning
  3. 10/100Day
  4. 29/100Evening

Saturday — November 14

21°/8°

Index by time of day

62/100Moderate

  1. 62/100Night
  2. 43/100Morning
  3. 9/100Day
  4. 27/100Evening

Sunday — November 15

15°/11°

Index by time of day

50/100Moderate

  1. 50/100Night
  2. 37/100Morning
  3. 8/100Day
  4. 20/100Evening

Monday — November 16

13°/9°

Index by time of day

34/100Low

  1. 34/100Night
  2. 28/100Morning
  3. 10/100Day
  4. 26/100Evening

Tuesday — November 17

16°/8°

Index by time of day

52/100Moderate

  1. 52/100Night
  2. 40/100Morning
  3. 7/100Day
  4. 25/100Evening

Forecast of conditions that trap pollution near the surface

Weather

8°

Cloudy. Feels like 6°C

  1. MorningCloudy12°C65%
  2. DayCloudy19°C43%
  3. EveningPartly cloudy10°C92%

Wind

1m/sWind from the ESE

1m/sWind gusts

Wind force: 1

Light wind is expected over the next few hours.

10-day weather forecast for Shiyan

China

  1. TodayNov 12Cloudy19°C7°C
  2. FriNov 13Cloudy20°C9°C
  3. SatNov 14Fog21°C8°C
  4. SunNov 15Rain15°C11°C
  5. MonNov 16Rain13°C9°C
  6. TueNov 17Rain16°C8°C
  7. WedNov 18Cloudy12°C4°C
  8. ThuNov 19Partly cloudy15°C3°C
  9. FriNov 20Partly cloudy18°C4°C
  10. SatNov 21Partly cloudy18°C5°C

China: sensors in total

1,515

  1. ChongqingChina

    32

  2. BeijingChina

    24

  3. ShanghaiChina

    19

Cities 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.

Air quality calendar: Shiyan

Daily mean PM2.5 of the city sensors, µg/m³

Click a day to see its date and value.

LowModerateElevatedHighVery highExtremely high

China · City ranking · All pilot cities

Questions

What is the air quality in Shiyan right now?

Fresh data for Shiyan are insufficient (last update: 07:45 local time, 23:45 UTC). Open the map for the latest readings of individual sensors.

Where do these data come from?

From Atmy sensors and connected public networks (citizen, experimental and government monitors), aggregated by Atmy. Values are approximate; see the methodology.

How often is this page updated?

The summary is rebuilt every 15 minutes from the latest reading of each sensor, each no older than one hour.

Data

Where do these data come from?

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