SmogRank / South Africa / Northern Cape

Air quality in De Aar

Northern Cape, South Africa. Over the last 24 hours its air rated Moderate, the 391st most polluted of 2,618 cities measured.

24-hour average59US AQI
Moderate

PM2.5 13.4 µg/m³, 0.9× the WHO 24-hour guideline. The figure the 24-hour ranking uses.

Latest hour: 39 US AQI (7.0 µg/m³), local time

Last 4 days, hour by hour

153011 Oct 21:00 local, 2026-10-11 19:00 UTC: 15.0 µg/m³11 Oct 22:00 local, 2026-10-11 20:00 UTC: 18.0 µg/m³11 Oct 23:00 local, 2026-10-11 21:00 UTC: 19.0 µg/m³12 Oct 00:00 local, 2026-10-11 22:00 UTC: 19.0 µg/m³12 Oct 01:00 local, 2026-10-11 23:00 UTC: 20.0 µg/m³12 Oct 02:00 local, 2026-10-12 00:00 UTC: 22.0 µg/m³12 Oct 03:00 local, 2026-10-12 01:00 UTC: 16.0 µg/m³12 Oct 04:00 local, 2026-10-12 02:00 UTC: 20.0 µg/m³12 Oct 05:00 local, 2026-10-12 03:00 UTC: 20.0 µg/m³12 Oct 06:00 local, 2026-10-12 04:00 UTC: 19.0 µg/m³12 Oct 07:00 local, 2026-10-12 05:00 UTC: 19.0 µg/m³12 Oct 08:00 local, 2026-10-12 06:00 UTC: 17.0 µg/m³12 Oct 09:00 local, 2026-10-12 07:00 UTC: 16.0 µg/m³12 Oct 10:00 local, 2026-10-12 08:00 UTC: 16.0 µg/m³12 Oct 11:00 local, 2026-10-12 09:00 UTC: 5.0 µg/m³12 Oct 12:00 local, 2026-10-12 10:00 UTC: 3.0 µg/m³12 Oct 13:00 local, 2026-10-12 11:00 UTC: 2.0 µg/m³12 Oct 14:00 local, 2026-10-12 12:00 UTC: 3.0 µg/m³12 Oct 15:00 local, 2026-10-12 13:00 UTC: 5.0 µg/m³12 Oct 16:00 local, 2026-10-12 14:00 UTC: 6.0 µg/m³12 Oct 17:00 local, 2026-10-12 15:00 UTC: 7.0 µg/m³12 Oct 18:00 local, 2026-10-12 16:00 UTC: 7.0 µg/m³Oct 9Oct 10Oct 11Oct 12
De Aar's local time; hover a bar for UTC. Dashed line: WHO 24-hour guideline (15 µg/m³).

Where De Aar ranks

24 hours#391of 2,618, at 59 US AQI (13.4 µg/m³)
7 days–not enough data
30 days–not enough data
This year–not enough data

Peak not checked: De Aar is measured at one place (monitors within 3 km of each other count as one), and its worst hours need a second place to confirm them.

The last 12 months, day by day

1102031Nov 2025DecJan 2026FebMarAprMayJunJulAugSepOct2025-11-01: no monitor reporting here yet2025-11-02: no monitor reporting here yet2025-11-03: no monitor reporting here yet2025-11-04: no monitor reporting here yet2025-11-05: no monitor reporting here yet2025-11-06: no monitor reporting here yet2025-11-07: no monitor reporting here yet2025-11-08: no monitor reporting here yet2025-11-09: no monitor reporting here yet2025-11-10: no monitor reporting here yet2025-11-11: no monitor reporting here yet2025-11-12: no monitor reporting here yet2025-11-13: no monitor reporting here yet2025-11-14: no monitor reporting here yet2025-11-15: no monitor reporting here yet2025-11-16: no monitor reporting here yet2025-11-17: no monitor reporting here yet2025-11-18: no monitor reporting here yet2025-11-19: no monitor reporting here yet2025-11-20: no monitor reporting here yet2025-11-21: no monitor reporting here yet2025-11-22: no monitor reporting here yet2025-11-23: no monitor reporting here yet2025-11-24: no monitor reporting here yet2025-11-25: no monitor reporting here yet2025-11-26: no monitor reporting here yet2025-11-27: no monitor reporting here yet2025-11-28: no monitor reporting here yet2025-11-29: no monitor reporting here yet2025-11-30: no monitor reporting here yet2025-12-01: no monitor reporting here yet2025-12-02: no monitor reporting here yet2025-12-03: no monitor reporting here yet2025-12-04: no monitor reporting here yet2025-12-05: no monitor reporting here yet2025-12-06: no monitor reporting here yet2025-12-07: no monitor reporting here yet2025-12-08: no monitor reporting here yet2025-12-09: no monitor reporting here yet2025-12-10: no monitor reporting here yet2025-12-11: no monitor reporting here yet2025-12-12: no monitor reporting here yet2025-12-13: no monitor reporting here yet2025-12-14: no monitor reporting here yet2025-12-15: no monitor reporting here yet2025-12-16: no monitor reporting here yet2025-12-17: no monitor reporting here yet2025-12-18: 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no monitor reporting here yet2026-10-07: no monitor reporting here yet2026-10-08: no monitor reporting here yet2026-10-09: no monitor reporting here yet2026-10-10: no monitor reporting here yet2026-10-11: no monitor reporting here yet
Daily history appears as days complete. One row per month, one square per local day.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Monitors

1 listed: 1 reference, 0 low-cost

PM2.5 from 1 reference monitor, updated hourly.

StationOperatorType
ES_De AarPermission requested (South Africa DFFE, SAAQIS, 2026-10-01)SAAQIS (South Africa's Department of Forestry, Fisheries and the Environment)ReferenceCounted

The city's value is the median of its reference monitors each hour, when at least a third of them report (three are always enough); low-cost sensors are listed but not counted when reference monitors exist. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Compare De Aar with another city

Side by side with Upington (the nearest), Vereeniging (South Africa's worst on 30 days), Gujranwala (the world's worst on 30 days).

Other cities in South Africa

30-day averages, US AQI. All of South Africa.

Updated 2026-10-12 17:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.