Cape Town air quality now

South Africa · The summary is refreshed every 15 minutes.

November 12

The air is clean now

Measured 23:00–23:47

Cape Town

17°C

Clear

24AQI

1020

hPa

Atmospheric
pressure

86%

Humidity

Cape Town, November 10, 2026: daily mean PM2.5 11 µg/m³ (5 sensors), level “Moderate” — as in the Atmy Data Hub. Now (00:00 local time): 4.4 µg/m³. Open methodology and data in JSON: Methodology and data sources · JSON

Right now in Cape Town, PM2.5 averages 4.4 µg/m³ — “good” on the US EPA scale (approximate, from hourly readings). Mean of 5 sensors from Government stations, AirGradient, readings from 23:00–23:47 local time (21:00–21:47 UTC), summary prepared at 00:00 local time. Median: 5.0 µg/m³; range across sensors: 0.0–7.0 µg/m³.

In Cape Town the air is good 🟢 AQI 24. Lower than three hours ago. ☀️ +17 °C · No precipitation · Wind 4 m/s

In Cape Town the air is good right now (approximate, US EPA scale). From 11:00 to 00:00 local time the city mean PM2.5 fell from 5.5 to 4.4 µg/m³. The highest hour was 20:00 with 8.2 µg/m³.

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

Weather now: clear, 17°C, wind 4 m/s, humidity 86%. No major change in the wind is expected in the coming hours. By 11:00 the temperature will be about 23°C.

Written automatically at 00:00 local time (22:00 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.

4 m/s

Wind, SSE

0 mm

Precipitation today

Cape Town: air quality for the completed day

Metric: PM2.5, µg/m³ · Color scale: EPA AQI · November 10, 2026 · 00:00–24:00 UTC = 02:00–02:00 UTC+2

11 µg/m³ Moderate

Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 02:00–02:00 UTC+2): 11 µg/m³ from 5 sensors that passed the quality check — the same value as in the Atmy Data Hub.

No. 2 of 4 cities in South Africa and No. 525 of 676 worldwide, from the most polluted.

LowModerateElevatedHighVery highExtremely high

Pollution accumulation index now

37/100Moderate · An estimate of weather conditions · not a PM2.5 forecast

Now3716
00.0008.0015.0023.00

Pollution accumulation forecast

Today — November 12

24°/16°

Index by time of day

53/100Moderate

  1. 53/100Night
  2. 40/100Morning
  3. 5/100Day
  4. 16/100Evening

Friday — November 13

23°/15°

Index by time of day

46/100Moderate

  1. 46/100Night
  2. 36/100Morning
  3. 6/100Day
  4. 17/100Evening

Saturday — November 14

26°/15°

Index by time of day

48/100Moderate

  1. 48/100Night
  2. 37/100Morning
  3. 6/100Day
  4. 15/100Evening

Sunday — November 15

23°/16°

Index by time of day

52/100Moderate

  1. 52/100Night
  2. 35/100Morning
  3. 6/100Day
  4. 19/100Evening

Monday — November 16

26°/16°

Index by time of day

43/100Moderate

  1. 43/100Night
  2. 30/100Morning
  3. 6/100Day
  4. 18/100Evening

Tuesday — November 17

28°/16°

Index by time of day

48/100Moderate

  1. 48/100Night
  2. 34/100Morning
  3. 5/100Day
  4. 21/100Evening

Forecast of conditions that trap pollution near the surface

Weather

17°

Clear. Feels like 17°C

  1. MorningClear21°C59%
  2. DayPartly cloudy23°C50%
  3. EveningCloudy17°C64%

Wind

4m/sWind from the SSE

9m/sWind gusts

Wind force: 3

Gusts up to 11 m/s are expected.

10-day weather forecast for Cape Town

South Africa

  1. TodayNov 12Cloudy24°C16°C
  2. FriNov 13Cloudy23°C15°C
  3. SatNov 14Cloudy26°C15°C
  4. SunNov 15Cloudy23°C16°C
  5. MonNov 16Partly cloudy26°C16°C
  6. TueNov 17Partly cloudy28°C16°C
  7. WedNov 18Partly cloudy34°C16°C
  8. ThuNov 19Clear35°C19°C
  9. FriNov 20Cloudy29°C18°C

Where in Cape Town is the air worse?

See all sensors

Highest current reading: 7.0 µg/m³ (Somerset West (SAAQIS (South African Air Quality Information System))). Lowest: 0.0 µg/m³ (Keurboom Park). The list shows every sensor, highest first.

  1. Somerset West (SAAQIS (South African Air Quality Information System)) →7 µg/m³
  2. Wallacedene-NAQI (SAAQIS (South African Air Quality Information System)) →6 µg/m³
  3. Table View-NAQI (SAAQIS (South African Air Quality Information System)) →5 µg/m³
  4. Foreshore-NAQI (SAAQIS (South African Air Quality Information System)) →4 µg/m³
  5. Keurboom Park →0 µg/m³

Source: atmy.ai monitoring network

Who provides the data

Sensors in the summary by network: Government stations — 4 sensors, AirGradient — 1 sensor.

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

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: Cape Town

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

Click a day to see its date and value.

LowModerateElevatedHighVery highExtremely high

Widget for your site

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

Air quality in Cape Town now — Atmy

South Africa · City ranking · All pilot cities

Questions

What was the air quality in Cape Town over the last completed day?

Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 02:00–02:00 UTC+2): 11 µg/m³ from 5 sensors that passed the quality check — the same value as in the Atmy Data Hub. No. 2 of 4 cities in South Africa and No. 525 of 676 worldwide, from the most polluted.

What is the air quality in Cape Town right now?

Right now in Cape Town, PM2.5 averages 4.4 µg/m³ — “good” on the US EPA scale (approximate, from hourly readings). Mean of 5 sensors from Government stations, AirGradient, readings from 23:00–23:47 local time (21:00–21:47 UTC), summary prepared at 00:00 local time. Median: 5.0 µg/m³; range across sensors: 0.0–7.0 µg/m³.

Is it safe to be outdoors in Cape Town now?

The current level is “good” (US EPA scale, approximate). Air quality is satisfactory; no restrictions are recommended. This is the standard guidance of the scale, not medical advice.

Where in Cape Town is the air worse?

Highest current reading: 7.0 µg/m³ (Somerset West (SAAQIS (South African Air Quality Information System))). Lowest: 0.0 µg/m³ (Keurboom Park). 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