Fine particles
11.9µg/m³Fair · 1 hourCAMS model • Open-Meteo
AntofagastaAir quality, PM2.5 and PM10
Check PM2.5 and PM10 particle levels alongside ozone, nitrogen dioxide and other gases. Compare the latest available concentrations with recent days and explore changes in air pollution through the available historical records.
Antofagasta - latest available concentrations (September 26, 2026, 22:00 local time): PM2.5: 11.9 µg/m³, PM10: 18.2 µg/m³, O₃: 59 µg/m³, NO₂: 1.3 µg/m³, SO₂: 3.2 µg/m³, CO: 106 µg/m³. These are hourly CAMS model values for a point representing the city.
Air quality questions →Antofagasta · Air pollutant concentrations
Data time: September 26, 2026 · 22:00 · local timeParticulate matter
18.2µg/m³Fair · 1 hourOzone
59µg/m³Good · 1 hourNitrogen dioxide
1.3µg/m³Good · 1 hourSulphur dioxide
3.2µg/m³Good · 1 hourCarbon monoxide
106µg/m³PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
DAILY DATA · Antofagasta
Antofagasta - air pollution over recent days (2026-08-30 - 2026-09-25)
Concentrations of all available pollutants for this city.
PM2.5Lowest 5.95 2026-09-02Highest 12.94 2026-09-192026-08-30 - 2026-09-25
PM10Lowest 8.86 2026-09-02Highest 18.89 2026-09-192026-08-30 - 2026-09-25
O₃Lowest 49.71 2026-08-31Highest 72.33 2026-09-032026-08-30 - 2026-09-25
NO₂Lowest 0.86 2026-08-30Highest 4.15 2026-09-192026-08-30 - 2026-09-25
SO₂Lowest 2 2026-09-20Highest 4.75 2026-09-022026-08-30 - 2026-09-25
COLowest 92.5 2026-09-21Highest 206.38 2026-09-012026-08-30 - 2026-09-25
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-09-25 | 2026-09-24 | 2026-09-23 | 2026-09-22 | 2026-09-21 | 2026-09-20 | 2026-09-19 | 2026-09-06 | 2026-09-05 | 2026-09-04 | 2026-09-03 | 2026-09-02 | 2026-09-01 | 2026-08-31 | 2026-08-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 11.43 | 10.53 | 9.94 | 9.45 | 10.2 | 9.38 | 12.94 | 11.56 | 11.47 | 9.45 | 11.4 | 5.95 | 8.8 | 7.6 | 8.26 |
| PM10 | 16.73 | 15.1 | 14.39 | 13.84 | 15.6 | 14.87 | 18.89 | 16.57 | 16.16 | 13.45 | 17.36 | 8.86 | 13.02 | 12.13 | 13.18 |
| O₃ | 66.08 | 67.92 | 68.75 | 65.75 | 62.21 | 64.04 | 62 | 72.08 | 69.58 | 68.17 | 72.33 | 69.67 | 52.67 | 49.71 | 58.08 |
| NO₂ | 1.63 | 2.33 | 1.88 | 1.35 | 1.11 | 0.89 | 4.15 | 1.21 | 1.38 | 1.8 | 1.44 | 1.6 | 3.74 | 1.77 | 0.86 |
| SO₂ | 3.43 | 3.03 | 3.62 | 3.79 | 4.14 | 2 | 3.12 | 3.05 | 3.8 | 4.05 | 3.65 | 4.75 | 3.85 | 2.66 | 2.59 |
| CO | 130.83 | 122.04 | 147.04 | 98.71 | 92.5 | 105.5 | 130.54 | 160.42 | 137.54 | 151.29 | 108.46 | 102.67 | 206.38 | 103.67 | 98.58 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
AIR QUALITY ARCHIVE · Antofagasta
Antofagasta - air pollution history (2015-09 - 2020-05)
Compare monthly particle and gas concentrations in the available archive.
PM2.5Lowest 3.92 2016-01Highest 17.7 2019-082015-09 - 2020-05
PM10Lowest 22.9 2019-01Highest 49 2019-032015-09 - 2020-05
SO₂Lowest 0.8 2019-04Highest 35.7 2018-072015-09 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 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 | 2018-12 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 14.1 | 10.8 | 7.66 | 8.08 | 8.89 | 11 | 10.6 | 12.1 | 11.1 | 17.7 | 17.6 | 16.8 | 14.7 | 10.5 | 7.84 | 6.27 | 5.8 | — | 6.64 | 7.33 | 10.1 | 13.5 | 14.3 | 14.9 | 11.4 | 9.77 | 8.67 | 6.77 | 7.8 | 5.38 | 4.36 | 6.37 | 16.9 | 7.56 | 13.2 | 13.8 | 10.3 | 8.75 | 8.36 | 7.52 | 6.59 | 5.25 | 6.47 | 6.56 | 10.5 | 10.9 | 13 | 15.1 | 11.4 | 8.1 | 8.6 | 8.87 | 3.92 | 4.3 | 8.38 | 11.3 | 12.8 |
| PM10 | 31.2 | 31.9 | 25.4 | 25.9 | 25.4 | 25.8 | 27.3 | 30.8 | 28.6 | 43.5 | 43.1 | 45.1 | 46 | 38.2 | 49 | 24.7 | 22.9 | — | 24.8 | 25.5 | 30.9 | 35.1 | 36.3 | 42.1 | 34.3 | 34.2 | 39.1 | 30.3 | 24.3 | 27.3 | 24.5 | 31 | 33.4 | 35.3 | 43.6 | 44.6 | 41.7 | 38.6 | 41.4 | 39.1 | 28.3 | 28.2 | 28.1 | 30.7 | 36.1 | 41.6 | 43.2 | 48 | 32.1 | 31.5 | 36.2 | 33 | 26.6 | 28.6 | 32.5 | 35 | 46.9 |
| SO₂ | 2.69 | 3.94 | 2.68 | 2.25 | 2.36 | 2.01 | 1.82 | 5.01 | 1.06 | 1.87 | 7.21 | 8.62 | 6.69 | 0.8 | 5.24 | 2.17 | 1.9 | — | 2.04 | 3.21 | 4.5 | 2.99 | 35.7 | 16.5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
Historical data by station 1
AIR QUALITY ARCHIVE · Antofagasta
Antofagasta
Station code: Antofagasta
Monthly monitoring station data.
PM2.5Lowest 3.92 2016-01Highest 17.7 2019-082015-09 - 2020-05
PM10Lowest 22.9 2019-01Highest 49 2019-032015-09 - 2020-05
SO₂Lowest 0.8 2019-04Highest 35.7 2018-072015-09 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 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 | 2018-12 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 14.1 | 10.8 | 7.66 | 8.08 | 8.89 | 11 | 10.6 | 12.1 | 11.1 | 17.7 | 17.6 | 16.8 | 14.7 | 10.5 | 7.84 | 6.27 | 5.8 | — | 6.64 | 7.33 | 10.1 | 13.5 | 14.3 | 14.9 | 11.4 | 9.77 | 8.67 | 6.77 | 7.8 | 5.38 | 4.36 | 6.37 | 16.9 | 7.56 | 13.2 | 13.8 | 10.3 | 8.75 | 8.36 | 7.52 | 6.59 | 5.25 | 6.47 | 6.56 | 10.5 | 10.9 | 13 | 15.1 | 11.4 | 8.1 | 8.6 | 8.87 | 3.92 | 4.3 | 8.38 | 11.3 | 12.8 |
| PM10 | 31.2 | 31.9 | 25.4 | 25.9 | 25.4 | 25.8 | 27.3 | 30.8 | 28.6 | 43.5 | 43.1 | 45.1 | 46 | 38.2 | 49 | 24.7 | 22.9 | — | 24.8 | 25.5 | 30.9 | 35.1 | 36.3 | 42.1 | 34.3 | 34.2 | 39.1 | 30.3 | 24.3 | 27.3 | 24.5 | 31 | 33.4 | 35.3 | 43.6 | 44.6 | 41.7 | 38.6 | 41.4 | 39.1 | 28.3 | 28.2 | 28.1 | 30.7 | 36.1 | 41.6 | 43.2 | 48 | 32.1 | 31.5 | 36.2 | 33 | 26.6 | 28.6 | 32.5 | 35 | 46.9 |
| SO₂ | 2.69 | 3.94 | 2.68 | 2.25 | 2.36 | 2.01 | 1.82 | 5.01 | 1.06 | 1.87 | 7.21 | 8.62 | 6.69 | 0.8 | 5.24 | 2.17 | 1.9 | — | 2.04 | 3.21 | 4.5 | 2.99 | 35.7 | 16.5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
How should I interpret the data and averaging period? →
OpenAQ ↗Chile - SINCA
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WEATHER & SURROUNDINGS
Antofagasta · weather forecast
Daily maximum and minimum temperatures. Forecast point: -23.6524, -70.3954.
Scroll the forecast to see the following days.
Antofagasta · September 24, 2026: minimum temperature 16°C, maximum 19.9°C. Wind: 15.6 km/h. Humidity: 73%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-09-24 | 19.7 | 16 | 19.9 | 18.4 | — | 4.3 | 73 | 48 |
| 2026-09-25 | 19.2 | 16 | 19.3 | 17.4 | — | 3.6 | 73 | 35 |
| 2026-09-26 | 20.8 | 16 | 21.3 | 17.5 | — | 4.2 | 68 | 21 |
| 2026-09-27 | 19.7 | 16 | 19.8 | 16.6 | — | 3.2 | 71 | 2 |
| 2026-09-28 | 19.8 | 15.7 | 19.8 | 16.4 | — | 4 | 66 | 100 |
| 2026-09-29 | 19.3 | 16.6 | 19.3 | 16.6 | 0.5 | 4.8 | 75 | 31 |
| 2026-09-30 | 18.8 | 15.7 | 18.8 | 16.7 | — | 5 | 70 | 22 |
| 2026-10-01 | 21.5 | 17.1 | 21.5 | 17.1 | 0.5 | 4.8 | 63 | 22 |
| 2026-10-02 | 19.1 | 15.9 | 19.1 | 15.9 | 8.2 | 3.5 | 72 | 59 |
| 2026-10-03 | 18.2 | 16 | 18.2 | 16.8 | 0.3 | 4.6 | 78 | 100 |
| 2026-10-04 | 17.8 | 15.6 | 17.9 | 16.4 | — | 4.3 | 75 | 32 |
| 2026-10-05 | 21.3 | 16.7 | 21.3 | 16.7 | — | 5.1 | 61 | 39 |
| 2026-10-06 | 20.1 | 15.5 | 20.1 | 16.6 | — | 3.2 | 66 | 35 |
| 2026-10-07 | 20.1 | 15.7 | 20.1 | 17.5 | — | 3 | 65 | 2 |
| 2026-10-08 | 21.8 | 16 | 21.8 | 18.6 | — | 3.4 | 60 | 100 |
| 2026-10-09 | 21.4 | 17.2 | 21.4 | 17.9 | — | 3.1 | 63 | 36 |
| 2026-10-10 | 20.4 | 16.2 | 20.4 | 16.5 | — | 2.4 | 60 | 79 |
UV index by day · Antofagasta
City data.
SPF 50, long sleeves and shade between 10:00-16:00.
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme
Scroll the forecast to see the following days.
Antofagasta · September 26, 2026: UV index: 8.1 .
| Indicator | 2026-09-26 | 2026-09-27 | 2026-09-28 | 2026-09-29 | 2026-09-30 | 2026-10-01 | 2026-10-02 | 2026-10-03 | 2026-10-04 | 2026-10-05 | 2026-10-06 | 2026-10-07 | 2026-10-08 | 2026-10-09 | 2026-10-10 | 2026-10-11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 8.1 | 8.2 | 8.2 | 7.9 | 8.5 | 8.5 | 8.6 | 4.2 | 8.3 | 7.6 | 8.1 | 8.6 | 8.4 | 8.2 | 7.6 | — |
AIR QUALITY QUESTIONS
Antofagasta · air pollution - questions and answers
What do the latest air quality data show for Antofagasta?
Antofagasta - latest available concentrations (September 26, 2026, 22:00 local time): PM2.5: 11.9 µg/m³, PM10: 18.2 µg/m³, O₃: 59 µg/m³, NO₂: 1.3 µg/m³, SO₂: 3.2 µg/m³, CO: 106 µg/m³. These are hourly CAMS model values for a point representing the city.
When was PM2.5 highest in Antofagasta over the past week?
The highest available daily mean PM2.5 was 12.9 µg/m³ (September 19, 2026). This comparison covers 7 days with data in the seven days before September 26, 2026. The day of the latest reading is excluded because it may be incomplete.
What period does the pollution history for Antofagasta cover?
Available monthly means cover 2015-09 - 2020-05. The tables include PM2.5, PM10, SO₂. Missing values are marked with a dash, not treated as zero. Monthly archives and current model data may come from different sources.
Is the PM2.5 concentration for Antofagasta an AQI score?
No. PM2.5 and PM10 are concentrations in µg/m³. AQI is a separate index calculated using a defined scale. When comparing air quality, also check other pollutants, the date and the averaging period.
What UV index does the available forecast show for Antofagasta?
For September 26, 2026, the forecast UV index is 8.1. The UV section also shows the following available days.
What wind speed is forecast for Antofagasta?
For September 24, 2026, forecast wind speed is 15.6 km/h. The weather table includes wind, temperature and other available parameters for subsequent days.
PM2.5 · PM10 · NO₂ · O₃
Understanding air quality and pollution data
What do PM2.5 and PM10 mean?
PM2.5 and PM10 are fractions of airborne particulate matter. PM2.5 covers fine particles up to 2.5 micrometres in diameter, while PM10 covers particles up to 10 micrometres. Concentrations in µg/m³ tell you how many micrograms of particles are present in a cubic metre of air. Compare values over the same time period.
Where does the air pollution data come from?
The latest concentrations come from the CAMS atmospheric model via Open-Meteo for each city’s coordinates. Values describe a model area, so conditions on individual streets may differ. Historical monitoring station data is shown separately where available.
How does PM2.5 concentration differ from AQI?
PM2.5 is the concentration of one particle fraction, expressed in µg/m³. AQI is an index calculated using a particular scale and thresholds. The pollutant cards show concentrations. Our city ranking compares PM2.5; PM10, ozone, nitrogen dioxide and other available gases add to the picture of air quality.
Which dates do the values and charts cover?
Each current value has a data date and time. Current concentration cards show the latest available hour, daily charts summarise individual days, and monthly records let you compare longer periods. These values represent different time intervals.
How can I check pollution in my city?
Search for your city and open its air quality page. Start with PM2.5 and PM10, then check the other available pollutants and the data timestamp. Charts and tables help you compare concentrations over time. Weather and historical climate information complement the pollution data.