Air Quality in Antofagasta Today — Live AQI, PM2.5 & PM10, Smog, Weather and Forecast

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Latest air quality data: Antofagasta

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

particulate matter (PM2.5) dust - 10 (Good)
particulate matter (PM10) suspended dust - 15 (Good)
ozone (O3) - 66 (Good)
nitrogen dioxide (NO2) - 2 (Good)
sulfur dioxide (SO2) - 5 (Good)
carbon monoxide (CO) - 115 (Good)

Real-time Air Quality Index (AQI) for Antofagasta, Wednesday, August 26, 2026: 1.

AQI 1 Good

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

Today (Wednesday, August 26, 2026) air quality is good. The air quality has no effect on health. Everyone can continue their outdoor activities normally in Antofagasta.

What is the current level of PM2.5 in Antofagasta? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 10 (Good) For comparison, the highest level of PM2.5 in Antofagasta in the last 7 days was: 15 (Friday, August 21, 2026) and the lowest: 4 (Wednesday, August 19, 2026). The highest PM2.5 values were recorded: 18 (August 2019). The lowest level of particulate matter PM2.5 pollution occurs in month: January (3.9).

What is the level of PM10 today in Antofagasta? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Antofagasta is: 15 (Good) The highest PM10 values usually occur in month: 49 (March 2019). The lowest value of particulate matter PM10 pollution in Antofagasta is usually recorded in: January (23).

How is the O3 level today in Antofagasta? (ozone (O3))
66 (Good)

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

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

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

Current data Wednesday, August 26, 2026 at 9:00 PM

PM2,5 10 (Good)

PM10 15 (Good)

O3 66 (Good)

NO2 2 (Good)

SO2 5 (Good)

CO 115 (Good)

Data on air pollution from recent days in Antofagasta

index	2026-08-26	2026-08-25	2026-08-24	2026-08-23	2026-08-22	2026-08-21	2026-08-20	2026-08-19
pm25	9 Good	10 Good	9 Good	9 Good	12 Good	15 Moderate	11 Good	4 Good
pm10	14 Good	15 Good	13 Good	13 Good	17 Good	21 Moderate	21 Moderate	6 Good
o3	68 Good	68 Good	60 Good	74 Moderate	76 Moderate	68 Good	45 Good	45 Good
no2	2 Good	3 Good	3 Good	1 Good	2 Good	4 Good	6 Good	3 Good
so2	4 Good	4 Good	3 Good	3 Good	4 Good	4 Good	3 Good	2 Good
co	116 Good	132 Good	170 Good	132 Good	130 Good	289 Good	263 Good	183 Good

data source »

pollution pm25 hikersbay.com — Air pollution in Antofagasta from September 2015 to May 2020

index	2020-05	2020-04	2020-03	2020-02	2020-01	2019-12	2019-11	2019-10	2019-09	2019-08	2019-07	2019-06	2019-05	2019-04	2019-03	2019-02	2019-01	2018-11	2018-10	2018-09	2018-08	2018-07	2018-06	2018-05	2018-04	2018-03	2018-02	2018-01	2017-12	2017-11	2017-10	2017-09	2017-08	2017-07	2017-06	2017-05	2017-04	2017-03	2017-02	2017-01	2016-12	2016-11	2016-10	2016-09	2016-08	2016-07	2016-06	2016-05	2016-04	2016-03	2016-02	2016-01	2015-12	2015-11	2015-10	2015-09
so2	2.7 (Good)	3.9 (Good)	2.7 (Good)	2.3 (Good)	2.4 (Good)	2 (Good)	1.8 (Good)	5 (Good)	1.1 (Good)	1.9 (Good)	7.2 (Good)	8.6 (Good)	6.7 (Good)	0.8 (Good)	5.2 (Good)	2.2 (Good)	1.9 (Good)	2 (Good)	3.2 (Good)	4.5 (Good)	3 (Good)	36 (Good)	17 (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)
pm25	14 (Moderate)	11 (Good)	7.7 (Good)	8.1 (Good)	8.9 (Good)	11 (Good)	11 (Good)	12 (Good)	11 (Good)	18 (Moderate)	18 (Moderate)	17 (Moderate)	15 (Moderate)	11 (Good)	7.8 (Good)	6.3 (Good)	5.8 (Good)	6.6 (Good)	7.3 (Good)	10 (Good)	14 (Moderate)	14 (Moderate)	15 (Moderate)	11 (Good)	9.8 (Good)	8.7 (Good)	6.8 (Good)	7.8 (Good)	5.4 (Good)	4.4 (Good)	6.4 (Good)	17 (Moderate)	7.6 (Good)	13 (Moderate)	14 (Moderate)	10 (Good)	8.8 (Good)	8.4 (Good)	7.5 (Good)	6.6 (Good)	5.3 (Good)	6.5 (Good)	6.6 (Good)	11 (Good)	11 (Good)	13 (Moderate)	15 (Moderate)	11 (Good)	8.1 (Good)	8.6 (Good)	8.9 (Good)	3.9 (Good)	4.3 (Good)	8.4 (Good)	11 (Good)	13 (Good)
pm10	31 (Moderate)	32 (Moderate)	25 (Moderate)	26 (Moderate)	25 (Moderate)	26 (Moderate)	27 (Moderate)	31 (Moderate)	29 (Moderate)	44 (Moderate)	43 (Moderate)	45 (Moderate)	46 (Moderate)	38 (Moderate)	49 (Moderate)	25 (Moderate)	23 (Moderate)	25 (Moderate)	26 (Moderate)	31 (Moderate)	35 (Moderate)	36 (Moderate)	42 (Moderate)	34 (Moderate)	34 (Moderate)	39 (Moderate)	30 (Moderate)	24 (Moderate)	27 (Moderate)	25 (Moderate)	31 (Moderate)	33 (Moderate)	35 (Moderate)	44 (Moderate)	45 (Moderate)	42 (Moderate)	39 (Moderate)	41 (Moderate)	39 (Moderate)	28 (Moderate)	28 (Moderate)	28 (Moderate)	31 (Moderate)	36 (Moderate)	42 (Moderate)	43 (Moderate)	48 (Moderate)	32 (Moderate)	32 (Moderate)	36 (Moderate)	33 (Moderate)	27 (Moderate)	29 (Moderate)	33 (Moderate)	35 (Moderate)	47 (Moderate)

data source »

Antofagasta

Wednesday, August 26, 2026 at 9:00 PM

PM2,5 10 (Good)

particulate matter (PM2.5) dust

PM10 15 (Good)

particulate matter (PM10) suspended dust

O3 66 (Good)

ozone (O3)

NO2 2.3 (Good)

nitrogen dioxide (NO2)

SO2 4.5 (Good)

sulfur dioxide (SO2)

CO 115 (Good)

carbon monoxide (CO)

Antofagasta

index	2026-08-19	2026-08-20	2026-08-21	2026-08-22	2026-08-23	2026-08-24	2026-08-25	2026-08-26
pm25	3.6	11	15	12	9	8.6	10	9.5
pm10	6.2	21	21	17	13	13	15	14
o3	45	45	68	76	74	60	68	68
no2	3	5.6	4.3	2	1.3	2.7	2.6	1.9
so2	1.9	2.7	4.2	3.5	3.2	3.1	3.7	3.6
co	183	263	289	130	132	170	132	116

Antofagasta

index	2020-05	2020-04	2020-03	2020-02	2020-01	2019-12	2019-11	2019-10	2019-09	2019-08	2019-07	2019-06	2019-05	2019-04	2019-03	2019-02	2019-01	2018-11	2018-10	2018-09	2018-08	2018-07	2018-06	2018-05	2018-04	2018-03	2018-02	2018-01	2017-12	2017-11	2017-10	2017-09	2017-08	2017-07	2017-06	2017-05	2017-04	2017-03	2017-02	2017-01	2016-12	2016-11	2016-10	2016-09	2016-08	2016-07	2016-06	2016-05	2016-04	2016-03	2016-02	2016-01	2015-12	2015-11	2015-10	2015-09
pm25	14	11	7.7	8.1	8.9	11	11	12	11	18	18	17	15	11	7.8	6.3	5.8	6.6	7.3	10	14	14	15	11	9.8	8.7	6.8	7.8	5.4	4.4	6.4	17	7.6	13	14	10	8.8	8.4	7.5	6.6	5.3	6.5	6.6	11	11	13	15	11	8.1	8.6	8.9	3.9	4.3	8.4	11	13
pm10	31	32	25	26	25	26	27	31	29	44	43	45	46	38	49	25	23	25	26	31	35	36	42	34	34	39	30	24	27	25	31	33	35	44	45	42	39	41	39	28	28	28	31	36	42	43	48	32	32	36	33	27	29	33	35	47
so2	2.7	3.9	2.7	2.3	2.4	2	1.8	5	1.1	1.9	7.2	8.6	6.7	0.8	5.2	2.2	1.9	2	3.2	4.5	3	36	17	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

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

🌦️ Weather · 16-day Forecast — Antofagasta

16-day weather forecast for Antofagasta: today around 21°C (cloudy), lows near 16°C. Daily temperature and conditions, updated every day. Strong wind (about 19 km/h) is actively clearing smog and dust away.

☀️ UV Index · 16-day Forecast — Antofagasta

The UV index in Antofagasta today is 7.2 (high) — unprotected fair skin can burn in about 30 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Antofagasta — compare nearby locations.

Calama 15 µg/m³
Iquique 4 µg/m³
SaltaArgentina 5 µg/m³
Arica 11 µg/m³
TarijaBolivia 5 µg/m³
TacnaPeru 14 µg/m³
Santiago 49 µg/m³
Puente Alto 26 µg/m³

Frequently asked questions

Is the air safe to breathe in Antofagasta today?

The current average PM2.5 across Antofagasta is about 10 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Antofagasta?

Right now PM2.5 in Antofagasta averages about 10 µg/m³ (“Good”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which day last week had the worst air in Antofagasta?

Over the past week, the highest daily PM2.5 in Antofagasta was recorded on Friday, August 21 (about 15 µg/m³).

What is the UV index in Antofagasta today?

The UV index in Antofagasta today is 7.2 (high) — unprotected fair skin can burn in about 30 minutes.

Does today's wind help disperse smog in Antofagasta?

Strong wind (about 19 km/h) is actively clearing smog and dust away.

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.