Semarang: Air Pollution Today — AQI Index, PM2.5/PM10, Smog Alerts and Forecast

Latest air quality data: Semarang

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Pollution and air quality forecast for Semarang. Today is Thursday, August 27, 2026. The following air pollution values have been recorded for Semarang:

particulate matter (PM2.5) dust - 34 (Moderate)
particulate matter (PM10) suspended dust - 38 (Moderate)
ozone (O3) - 61 (Good)
nitrogen dioxide (NO2) - 14 (Good)
sulfur dioxide (SO2) - 17 (Good)
carbon monoxide (CO) - 870 (Good)

Real-time Air Quality Index (AQI) for Semarang, Thursday, August 27, 2026: 2.

AQI 2 Moderate

What is the air quality in Semarang today? Is the air polluted in Semarang?. Is there smog?

Today (Thursday, August 27, 2026) air quality is moderate in Semarang. Some pollutants in Semarang may slightly affect very few hypersensitive individuals. Air pollutants in Semarang may cause minor breathing discomfort to sensitive people.

What is the current level of PM2.5 in Semarang? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 34 (Moderate) For comparison, the highest level of PM2.5 in Semarang in the last 7 days was: 37 (Thursday, August 27, 2026) and the lowest: 28 (Monday, August 24, 2026).

What is the level of PM10 today in Semarang? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Semarang is: 38 (Moderate)

How is the O3 level today in Semarang? (ozone (O3))
61 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
14 (Good)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
17 (Good)

How high is the CO level? (carbon monoxide (CO))
870 (Good)

Current data Thursday, August 27, 2026 at 8:00 AM

PM2,5 34 (Moderate)

PM10 38 (Moderate)

O3 61 (Good)

NO2 14 (Good)

SO2 17 (Good)

CO 870 (Good)

Data on air pollution from recent days in Semarang

index	2026-08-27	2026-08-26	2026-08-25	2026-08-24	2026-08-23	2026-08-22	2026-08-21	2026-08-20
pm25	37 Unhealthy for Sensitive Groups	32 Moderate	29 Moderate	28 Moderate	37 Unhealthy for Sensitive Groups	37 Unhealthy for Sensitive Groups	30 Moderate	32 Moderate
pm10	43 Moderate	36 Moderate	34 Moderate	33 Moderate	42 Moderate	42 Moderate	34 Moderate	36 Moderate
o3	121 Unhealthy for Sensitive Groups	106 Moderate	109 Moderate	116 Moderate	126 Unhealthy for Sensitive Groups	118 Moderate	93 Moderate	97 Moderate
no2	12 Good	13 Good	12 Good	10 Good	10 Good	12 Good	13 Good	14 Good
so2	17 Good	29 Good	21 Good	19 Good	22 Good	24 Good	27 Good	28 Good
co	682 Good	611 Good	658 Good	572 Good	527 Good	547 Good	550 Good	674 Good

data source »

Semarang

Thursday, August 27, 2026 at 8:00 AM

PM2,5 34 (Moderate)

particulate matter (PM2.5) dust

PM10 38 (Moderate)

particulate matter (PM10) suspended dust

O3 61 (Good)

ozone (O3)

NO2 14 (Good)

nitrogen dioxide (NO2)

SO2 17 (Good)

sulfur dioxide (SO2)

CO 870 (Good)

carbon monoxide (CO)

Semarang

index	2026-08-20	2026-08-21	2026-08-22	2026-08-23	2026-08-24	2026-08-25	2026-08-26	2026-08-27
pm25	32	30	37	37	28	29	32	37
pm10	36	34	42	42	33	34	36	43
o3	97	93	118	126	116	109	106	121
no2	14	13	12	10	10	12	13	12
so2	28	27	24	22	19	21	29	17
co	674	550	547	527	572	658	611	682

* Pollution data source: https://openaq.org () The data is licensed under CC-By 4.0

🌦️ Weather · 16-day Forecast — Indonesia

16-day weather forecast for Indonesia: today around 36°C (partly cloudy), lows near 24°C. Daily temperature and conditions, updated every day. Wind is light today (about 6 km/h) — pollutants can build up near the ground.

☀️ UV Index · 16-day Forecast — Indonesia

The UV index in Indonesia today is 8.9 (very high) — unprotected fair skin can burn in about 20 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Semarang — compare nearby locations.

Yogyakarta 19 µg/m³
Surabaya 29 µg/m³
Malang 15 µg/m³
Bandung 67 µg/m³
Bekasi 83 µg/m³
Depok 83 µg/m³
Bogor 83 µg/m³
Situbondo Regency 19 µg/m³

Frequently asked questions

Is the air safe to breathe in Semarang today?

The current average PM2.5 across Semarang is about 34 µg/m³, rated “Moderate”. Air quality is acceptable, but unusually sensitive people should limit prolonged outdoor exertion.

What is the current PM2.5 level in Semarang?

Right now PM2.5 in Semarang averages about 34 µg/m³ (“Moderate”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which day last week had the worst air in Semarang?

Over the past week, the highest daily PM2.5 in Semarang was recorded on Thursday, August 27 (about 37 µg/m³).

What is the UV index in Semarang today?

The UV index in Semarang today is 8.9 (very high) — unprotected fair skin can burn in about 20 minutes.

Does today's wind help disperse smog in Semarang?

Wind is light today (about 6 km/h) — pollutants can build up near the ground.

How is air quality measured?

Air quality here is based on PM2.5 — the concentration of fine particulate matter in µg/m³. Lower values mean cleaner air. Data is updated daily from Open-Meteo.