Weihai air quality now

China · The summary is refreshed every 15 minutes.

November 12

The air is moderate now

Measured 05:00

Weihai

8°C

Clear

80AQI

1023

hPa

Atmospheric
pressure

85%

Humidity

Weihai, November 10, 2026: daily mean PM2.5 27 µg/m³ (5 sensors), level “Moderate” — as in the Atmy Data Hub. Now (06:00 local time): 24.6 µg/m³. Open methodology and data in JSON: Methodology and data sources · JSON

Right now in Weihai, PM2.5 averages 24.6 µg/m³ — “moderate” on the US EPA scale (approximate, from hourly readings). Mean of 5 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: 23.0 µg/m³; range across sensors: 21.0–29.0 µg/m³.

In Weihai the air is moderate 🟡 AQI 80. Higher than three hours ago. ☀️ +8 °C · No precipitation · Wind 3 m/s

In Weihai the air is moderate right now (approximate, US EPA scale). From 17:00 to 06:00 local time the city mean PM2.5 stayed roughly level: from 21.8 to 24.6 µg/m³.

High humidity (85%) possibly makes optical sensors read somewhat higher.

Weather now: clear, 8°C, wind 3 m/s, humidity 85%. No major change in the wind is expected in the coming hours. By 17:00 the temperature will be about 13°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, SW

0 mm

Precipitation today

Weihai: air quality for the completed day

Metric: PM2.5, µg/m³ · Color scale: EPA AQI · November 10, 2026 · 00:00–24:00 UTC = 08:00–08:00 UTC+8

27 µg/m³ Moderate

Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 08:00–08:00 UTC+8): 27 µg/m³ from 5 sensors that passed the quality check — the same value as in the Atmy Data Hub.

LowModerateElevatedHighVery highExtremely high

Pollution accumulation index now

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

Now4050
06.0014.0021.0005.00

Pollution accumulation forecast

Today — November 12

17°/8°

Index by time of day

52/100Moderate

  1. 52/100Night
  2. 40/100Morning
  3. 8/100Day
  4. 20/100Evening

Friday — November 13

17°/8°

Index by time of day

50/100Moderate

  1. 50/100Night
  2. 36/100Morning
  3. 8/100Day
  4. 21/100Evening

Saturday — November 14

17°/11°

Index by time of day

51/100Moderate

  1. 51/100Night
  2. 43/100Morning
  3. 10/100Day
  4. 28/100Evening

Sunday — November 15

14°/10°

Index by time of day

60/100Moderate

  1. 60/100Night
  2. 24/100Morning
  3. 5/100Day
  4. 15/100Evening

Monday — November 16

11°/9°

Index by time of day

35/100Moderate

  1. 35/100Night
  2. 26/100Morning
  3. 6/100Day
  4. 17/100Evening

Tuesday — November 17

11°/9°

Index by time of day

41/100Moderate

  1. 41/100Night
  2. 25/100Morning
  3. 7/100Day
  4. 18/100Evening

Forecast of conditions that trap pollution near the surface

Weather

8°

Clear. Feels like 5°C

  1. MorningClear12°C61%
  2. DayCloudy17°C38%
  3. EveningCloudy10°C85%

Wind

3m/sWind from the SW

6m/sWind gusts

Wind force: 2

Gusts up to 9 m/s are expected.

10-day weather forecast for Weihai

China

  1. TodayNov 12Cloudy17°C8°C
  2. FriNov 13Cloudy17°C8°C
  3. SatNov 14Cloudy17°C11°C
  4. SunNov 15Cloudy14°C10°C
  5. MonNov 16Cloudy11°C9°C
  6. TueNov 17Rain11°C9°C
  7. WedNov 18Rain10°C5°C
  8. ThuNov 19Cloudy7°C5°C
  9. FriNov 20Snow9°C5°C
  10. SatNov 21Partly cloudy10°C6°C

Where in Weihai is the air worse?

See all sensors

Highest current reading: 29.0 µg/m³ (文登开发区 (中国环境监测总站 (CNEMC) — 国家城市环境空气质量监测网)). Lowest: 21.0 µg/m³ (华夏技校 (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.

  1. 文登开发区 (中国环境监测总站 (CNEMC) — 国家城市环境空气质量监测网) →29 µg/m³
  2. 市监测站 (中国环境监测总站 (CNEMC) — 国家城市环境空气质量监测网) →28 µg/m³
  3. 山大分校 (中国环境监测总站 (CNEMC) — 国家城市环境空气质量监测网) →23 µg/m³
  4. 临港区管委会 (中国环境监测总站 (CNEMC) — 国家城市环境空气质量监测网) →22 µg/m³
  5. 华夏技校 (中国环境监测总站 (CNEMC) — 国家城市环境空气质量监测网) →21 µg/m³

Source: atmy.ai monitoring network

Who provides the data

Sensors in the summary by network: Government stations — 5 sensors.

Atmy shows the networks’ readings after the Data Hub’s quality check: test devices and sensors that fail it are left out.

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: Weihai

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

Click a day to see its date and value.

LowModerateElevatedHighVery highExtremely high

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An Atmy card with the air quality in Weihai now: it is refreshed every 15 minutes and links to this page. Paste the code into your site.

Air quality in Weihai now — Atmy

China · City ranking · All pilot cities

Questions

What was the air quality in Weihai over the last completed day?

Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 08:00–08:00 UTC+8): 27 µg/m³ from 5 sensors that passed the quality check — the same value as in the Atmy Data Hub.

What is the air quality in Weihai right now?

Right now in Weihai, PM2.5 averages 24.6 µg/m³ — “moderate” on the US EPA scale (approximate, from hourly readings). Mean of 5 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: 23.0 µg/m³; range across sensors: 21.0–29.0 µg/m³.

Is it safe to be outdoors in Weihai now?

The current level is “moderate” (US EPA scale, approximate). Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors. This is the standard guidance of the scale, not medical advice.

Where in Weihai is the air worse?

Highest current reading: 29.0 µg/m³ (文登开发区 (中国环境监测总站 (CNEMC) — 国家城市环境空气质量监测网)). Lowest: 21.0 µg/m³ (华夏技校 (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.

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