Secunda air quality now

South Africa · The summary is refreshed every 15 minutes.

Now

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

Open map

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

There are not enough fresh measurements for Secunda right now. From 11:00 to 21:00 local time the city mean PM2.5 fell from 24.0 to 10.5 µg/m³. The highest hour was 19:00 with 30.5 µg/m³.

The weather data do not point to a clear reason for this level.

Weather now: clear, 19°C, wind 1 m/s, humidity 65%. No major change in the wind is expected in the coming hours. By 11:00 the temperature will be about 29°C.

Written automatically at 23:13 local time (21:13 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.

1 m/s

Wind, ENE

0 mm

Precipitation today

Pollution accumulation index now

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

Now4020
00.0008.0015.0023.00

Pollution accumulation forecast

Today — November 12

30°/15°

Index by time of day

57/100Moderate

  1. 57/100Night
  2. 39/100Morning
  3. 7/100Day
  4. 20/100Evening

Friday — November 13

31°/15°

Index by time of day

57/100Moderate

  1. 57/100Night
  2. 38/100Morning
  3. 5/100Day
  4. 23/100Evening

Saturday — November 14

28°/16°

Index by time of day

43/100Moderate

  1. 43/100Night
  2. 26/100Morning
  3. 8/100Day
  4. 19/100Evening

Sunday — November 15

24°/15°

Index by time of day

48/100Moderate

  1. 48/100Night
  2. 30/100Morning
  3. 9/100Day
  4. 24/100Evening

Monday — November 16

26°/14°

Index by time of day

51/100Moderate

  1. 51/100Night
  2. 36/100Morning
  3. 7/100Day
  4. 23/100Evening

Tuesday — November 17

25°/14°

Index by time of day

49/100Moderate

  1. 49/100Night
  2. 36/100Morning
  3. 7/100Day
  4. 22/100Evening

Forecast of conditions that trap pollution near the surface

Weather

19°

Clear. Feels like 18°C

  1. MorningClear27°C29%
  2. DayPartly cloudy30°C25%
  3. EveningClear20°C65%

Wind

1m/sWind from the ENE

2m/sWind gusts

Wind force: 1

Light wind is expected over the next few hours.

10-day weather forecast for Secunda

South Africa

  1. TodayNov 12Partly cloudy30°C15°C
  2. FriNov 13Partly cloudy31°C15°C
  3. SatNov 14Thunderstorm28°C16°C
  4. SunNov 15Rain24°C15°C
  5. MonNov 16Rain26°C14°C
  6. TueNov 17Thunderstorm25°C14°C
  7. WedNov 18Cloudy24°C14°C
  8. ThuNov 19Rain26°C14°C
  9. FriNov 20Cloudy27°C15°C

South Africa: sensors in total

33

  1. Cape TownSouth Africa

    5

  2. KwaDukuzaSouth Africa

    4

  3. Richards BaySouth Africa

    4

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: Secunda

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

Click a day to see its date and value.

LowModerateElevatedHighVery highExtremely high

South Africa · City ranking · All pilot cities

Questions

What is the air quality in Secunda right now?

Fresh data for Secunda are insufficient (last update: 01:45 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