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

The latest data Last 7 days Santiago pollution September 2015 - May 2020 Quality of life
Latest air quality data: Santiago
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Pollution and air quality forecast for Santiago. Today is Thursday, August 27, 2026. The following air pollution values have been recorded for Santiago:
  1. particulate matter (PM2.5) dust - 49 (Unhealthy for Sensitive Groups)
  2. particulate matter (PM10) suspended dust - 49 (Moderate)
  3. ozone (O3) - 40 (Good)
  4. nitrogen dioxide (NO2) - 68 (Moderate)
  5. sulfur dioxide (SO2) - 52 (Moderate)
  6. carbon monoxide (CO) - 2874 (Moderate)
Real-time Air Quality Index (AQI) for Santiago, Wednesday, August 26, 2026: 3.

air quality index: 2
AQI 3 Unhealthy for Sensitive Groups

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

Today (Wednesday, August 26, 2026) air quality is moderately polluted in Santiago. Healthy people may experience slight irritations and sensitive persons will be slightly affected to a larger extent by the pollutions in Santiago.


What is the current level of PM2.5 in Santiago? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 49 (Unhealthy for Sensitive Groups) For comparison, the highest level of PM2.5 in Santiago in the last 7 days was: 88 (Monday, August 24, 2026) and the lowest: 55 (Tuesday, August 25, 2026). The highest PM2.5 values were recorded: 53 (June 2016). The lowest level of particulate matter PM2.5 pollution occurs in month: October (13).

What is the level of PM10 today in Santiago? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Santiago is: 49 (Moderate) The highest PM10 values usually occur in month: 117 (July 2019). The lowest value of particulate matter PM10 pollution in Santiago is usually recorded in: November (41).

How is the O3 level today in Santiago? (ozone (O3))
40 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
68 (Moderate)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
52 (Moderate)

How high is the CO level? (carbon monoxide (CO))
2874 (Moderate)



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

PM2,5 49 (Unhealthy for Sensitive Groups)

PM10 49 (Moderate)

O3 40 (Good)

NO2 68 (Moderate)

SO2 52 (Moderate)

CO 2874 (Moderate)

Data on air pollution from recent days in Santiago

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 61
Unhealthy		 55
Unhealthy		 88
Very Unhealthy		 62
Unhealthy		 55
Unhealthy		 63
Unhealthy		 69
Unhealthy		 61
Unhealthy
pm10 62
Unhealthy for Sensitive Groups		 55
Unhealthy for Sensitive Groups		 88
Unhealthy		 63
Unhealthy for Sensitive Groups		 56
Unhealthy for Sensitive Groups		 64
Unhealthy for Sensitive Groups		 69
Unhealthy for Sensitive Groups		 62
Unhealthy for Sensitive Groups
o3 36
Good		 18
Good		 67
Good		 106
Moderate		 65
Good		 64
Good		 58
Good		 86
Moderate
no2 75
Moderate		 74
Moderate		 81
Moderate		 55
Moderate		 61
Moderate		 84
Moderate		 65
Moderate		 64
Moderate
so2 72
Moderate		 49
Good		 76
Moderate		 60
Moderate		 53
Moderate		 51
Moderate		 60
Moderate		 60
Moderate
co 1453
Good		 1170
Good		 1379
Good		 722
Good		 1371
Good		 1939
Good		 2828
Moderate		 1371
Good
data source »
Air pollution in Santiago from September 2015 to May 2020
pollution pm25 hikersbay.com
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 28 (Moderate) 21 (Moderate) 14 (Moderate) 17 (Moderate) 16 (Moderate) 13 (Moderate) 14 (Moderate) 16 (Moderate) 19 (Moderate) 33 (Moderate) 52 (Unhealthy for Sensitive Groups) 38 (Unhealthy for Sensitive Groups) 30 (Moderate) 30 (Moderate) 17 (Moderate) 22 (Moderate) 20 (Moderate) 14 (Moderate) 13 (Moderate) 26 (Moderate) 39 (Unhealthy for Sensitive Groups) 39 (Unhealthy for Sensitive Groups) 48 (Unhealthy for Sensitive Groups) 36 (Unhealthy for Sensitive Groups) 24 (Moderate) 17 (Moderate) 16 (Moderate) 16 (Moderate) 15 (Moderate) 17 (Moderate) 16 (Moderate) 23 (Moderate) 27 (Moderate) 46 (Unhealthy for Sensitive Groups) 43 (Unhealthy for Sensitive Groups) 35 (Unhealthy for Sensitive Groups) 20 (Moderate) 16 (Moderate) 19 (Moderate) 37 (Unhealthy for Sensitive Groups) 22 (Moderate) 16 (Moderate) 14 (Moderate) 27 (Moderate) 36 (Unhealthy for Sensitive Groups) 44 (Unhealthy for Sensitive Groups) 53 (Unhealthy for Sensitive Groups) 42 (Unhealthy for Sensitive Groups) 25 (Moderate) 24 (Moderate) 15 (Moderate) 16 (Moderate) 16 (Moderate) 17 (Moderate) 16 (Moderate) 23 (Moderate)
pm10 82 (Unhealthy) 73 (Unhealthy for Sensitive Groups) 66 (Unhealthy for Sensitive Groups) 65 (Unhealthy for Sensitive Groups) 62 (Unhealthy for Sensitive Groups) 56 (Unhealthy for Sensitive Groups) 57 (Unhealthy for Sensitive Groups) 53 (Unhealthy for Sensitive Groups) 86 (Unhealthy) 91 (Unhealthy) 117 (Very Unhealthy) 97 (Unhealthy) 90 (Unhealthy) 91 (Unhealthy) 54 (Unhealthy for Sensitive Groups) 50 (Moderate) 50 (Moderate) 41 (Moderate) 50 (Moderate) 62 (Unhealthy for Sensitive Groups) 77 (Unhealthy for Sensitive Groups) 67 (Unhealthy for Sensitive Groups) 95 (Unhealthy) 96 (Unhealthy) 82 (Unhealthy) 77 (Unhealthy for Sensitive Groups) 57 (Unhealthy for Sensitive Groups) 54 (Unhealthy for Sensitive Groups) 52 (Unhealthy for Sensitive Groups) 50 (Moderate) 48 (Moderate) 64 (Unhealthy for Sensitive Groups) 64 (Unhealthy for Sensitive Groups) 106 (Unhealthy) 84 (Unhealthy) 70 (Unhealthy for Sensitive Groups) 66 (Unhealthy for Sensitive Groups) 67 (Unhealthy for Sensitive Groups) 57 (Unhealthy for Sensitive Groups) 78 (Unhealthy for Sensitive Groups) 53 (Unhealthy for Sensitive Groups) 53 (Unhealthy for Sensitive Groups) 44 (Moderate) 70 (Unhealthy for Sensitive Groups) 71 (Unhealthy for Sensitive Groups) 80 (Unhealthy) 84 (Unhealthy) 69 (Unhealthy for Sensitive Groups) 61 (Unhealthy for Sensitive Groups) 75 (Unhealthy for Sensitive Groups) 55 (Unhealthy for Sensitive Groups) 52 (Unhealthy for Sensitive Groups) 52 (Unhealthy for Sensitive Groups) 44 (Moderate) 41 (Moderate) 49 (Moderate)
co 894 (Good) 633 (Good) 762 (Good) 732 (Good) 426 (Good) 642 (Good) 518 (Good) 533 (Good) 594 (Good) 374 (Good) 1 (Good) 1 (Good) 1 (Good) 754 (Good) 261 (Good) 628 (Good) 731 (Good) 609 (Good) 639 (Good) 436 (Good) 1 (Good) 1 (Good) 1 (Good) 1 (Good) 662 (Good) 270 (Good) 697 (Good) 484 (Good) 671 (Good) 724 (Good) 256 (Good) 368 (Good) 442 (Good) 1.5 (Good) 1 (Good) 1 (Good) 394 (Good) 805 (Good) 708 (Good) 688 (Good) 407 (Good) 667 (Good) 474 (Good) 795 (Good) 922 (Good) 1.5 (Good) 6 (Good) 3 (Good) 467 (Good) 813 (Good) 488 (Good) 623 (Good) 692 (Good) 162 (Good) 331 (Good) 211 (Good)
no2 33 (Good) 23 (Good) 20 (Good) 27 (Good) 29 (Good) 32 (Good) 27 (Good) 32 (Good) 41 (Moderate) 69 (Moderate) 82 (Moderate) 84 (Moderate) 77 (Moderate) 76 (Moderate) 52 (Moderate) 39 (Good) 35 (Good) 35 (Good) 35 (Good) 64 (Moderate) 67 (Moderate) 86 (Moderate) 96 (Moderate) 75 (Moderate) 60 (Moderate) 49 (Moderate) 33 (Good) 29 (Good) 42 (Moderate) 34 (Good) 32 (Good) 54 (Moderate) 54 (Moderate) 74 (Moderate) 68 (Moderate) 62 (Moderate) 54 (Moderate) 42 (Moderate) 32 (Good) 38 (Good) 28 (Good) 29 (Good) 35 (Good) 54 (Moderate) 48 (Moderate) 54 (Moderate) 61 (Moderate) 60 (Moderate) 60 (Moderate) 51 (Moderate) 37 (Good) 36 (Good) 34 (Good) 28 (Good) 33 (Good) 47 (Moderate)
o3 41 (Good) 45 (Good) 48 (Good) 47 (Good) 51 (Good) 49 (Good) 48 (Good) 38 (Good) 35 (Good) 19 (Good) 12 (Good) 8.9 (Good) 16 (Good) 36 (Good) 40 (Good) 53 (Good) 46 (Good) 37 (Good) 31 (Good) 28 (Good) 19 (Good) 11 (Good) 9.5 (Good) 17 (Good) 28 (Good) 38 (Good) 46 (Good) 49 (Good) 40 (Good) 43 (Good) 36 (Good) 30 (Good) 17 (Good) 11 (Good) 7.5 (Good) 9.3 (Good) 21 (Good) 36 (Good) 39 (Good) 52 (Good) 37 (Good) 36 (Good) 31 (Good) 32 (Good) 18 (Good) 8.7 (Good) 6.3 (Good) 9.6 (Good) 17 (Good) 34 (Good) 40 (Good) 29 (Good) 42 (Good) 28 (Good) 27 (Good) 29 (Good)
so2 - (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) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 17 (Good)
data source »

Quality of life in Santiago

Green and Parks in the City

Santiago 50%

Argentina: 65% Uruguay: 65% Paraguay: 46% Bolivia: 55% Montenegro: 53%

particulate matter PM2.5

Santiago 31 (Moderate)

Pleasure of spending time in the city

Santiago 44%

Argentina: 64% Uruguay: 67% Paraguay: 49% Bolivia: 40% Montenegro: 69%

particulate matter PM10

Santiago 66 (Unhealthy for Sensitive Groups)

Air Pollution

Santiago 83%

Argentina: 42% Uruguay: 29% Paraguay: 56% Bolivia: 64% Montenegro: 40%

Garbage Disposal

Santiago 59%

Argentina: 48% Uruguay: 34% Paraguay: 30% Bolivia: 34% Montenegro: 42%

Availability and quality of drinking water

Santiago 71%

Argentina: 69% Uruguay: 73% Paraguay: 57% Montenegro: 71%

Cleanliness and tidiness

Santiago 53%

Argentina: 43% Uruguay: 38% Paraguay: 26% Bolivia: 32% Montenegro: 51%

Noise and Light pollution

Santiago 55%

Argentina: 53% Uruguay: 48% Paraguay: 52% Bolivia: 59% Montenegro: 32%

Water Pollution

Santiago 41%

Argentina: 55% Uruguay: 46% Paraguay: 65% Bolivia: 66% Montenegro: 38%
Source: Numbeo


Santiago

Wednesday, August 26, 2026 at 9:00 PM

PM2,5 49 (Unhealthy for Sensitive Groups)

particulate matter (PM2.5) dust

PM10 49 (Moderate)

particulate matter (PM10) suspended dust

O3 40 (Good)

ozone (O3)

NO2 68 (Moderate)

nitrogen dioxide (NO2)

SO2 52 (Moderate)

sulfur dioxide (SO2)

CO 2874 (Moderate)

carbon monoxide (CO)

Santiago

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 61 69 63 55 62 88 55 61
pm10 62 69 64 56 63 88 55 62
o3 86 58 64 65 106 67 18 36
no2 64 65 84 61 55 81 74 75
so2 60 60 51 53 60 76 49 72
co 1371 2828 1939 1371 722 1379 1170 1453

Independencia

2015-09   2020-05
pollution pm25 hikersbay.com
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
no2 13 9.4 8.3 22 31 28 29 33 41 62 72 69 68 86 - 40 34 37 37 46 43 - - 71 70 55 42 37 37 32 35 64 59 73 65 66 60 49 37 42 28 29 37 58 42 45 55 69 72 64 50 48 46 37 39 59
pm25 28 22 15 17 17 14 14 17 19 34 53 37 30 29 16 21 20 15 15 27 39 40 49 37 25 16 16 16 16 19 17 22 26 45 42 35 21 16 22 40 22 17 14 27 35 42 50 42 27 25 14 17 17 16 17 24
o3 38 44 49 55 45 39 41 28 30 14 8.9 6.5 14 30 38 53 46 34 29 28 22 - 7.9 14 23 34 40 41 40 43 36 30 18 9.1 7.5 9.3 13 19 24 36 26 26 22 26 12 6.6 5 7 12 23 30 37 37 29 25 20
pm10 73 66 62 61 61 55 55 56 56 91 121 98 88 85 51 45 44 40 50 65 82 75 103 88 75 62 57 54 54 54 54 69 71 117 90 76 63 63 59 78 55 55 45 65 69 80 82 65 56 58 52 50 49 41 41 50
co 894 679 620 744 386 843 611 524 510 746 1 1 1 648 520 580 962 712 701 1 1 1 1 1 761 538 483 1 428 462 510 734 883 1 1 1 786 638 556 680 531 578 582 842 997 1 9 4 932 733 621 477 508 1 437 2

Parque O'Higgins

2015-09   2020-05
pollution pm25 hikersbay.com
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
co 894 586 904 720 466 441 424 542 677 1 1 1 1 859 1 676 500 506 576 870 1 1 1 1 563 2 910 966 914 985 1 1 1 2 1 1 1 971 859 695 283 756 366 747 846 2 3 2 1 893 354 768 876 323 225 420
no2 53 37 32 32 28 37 26 31 41 76 91 99 86 67 52 38 37 34 33 83 91 86 96 79 51 43 25 21 47 36 29 44 50 74 71 58 49 34 27 34 28 30 33 51 53 63 68 51 47 38 25 25 23 19 28 35
o3 44 47 47 39 58 58 56 48 40 24 16 11 18 42 43 53 45 40 34 28 17 11 11 19 33 42 52 57 - - - 30 16 14 - - 29 52 55 68 49 45 40 39 24 11 7.6 12 22 46 51 21 47 27 29 37
pm10 91 80 70 68 63 58 60 51 115 91 113 96 92 98 58 54 56 41 49 59 71 58 86 104 89 92 56 54 51 46 42 58 56 95 78 65 68 70 55 78 52 51 43 75 73 80 86 73 66 92 58 53 55 46 42 48
pm25 28 21 14 17 15 13 13 16 19 32 51 39 30 30 19 22 19 14 12 26 39 39 47 35 23 17 17 15 14 14 16 23 27 47 45 36 20 17 17 34 21 16 15 28 36 45 55 42 23 24 15 16 16 18 15 22
so2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17

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

🌦️ Weather · 16-day Forecast — Santiago

🌦️ WEATHER · 16-DAY FORECASTSantiago☁️16°CloudyToday · ↑17° ↓12°💨 3 km/h · 💧 74%Mon24.08☁️17°12°Tue25.08🌧️16°14°Wed26.08🌧️14°9°Thu27.08🌧️13°10°Fri28.08🌧️16°9°Sat29.08☁️18°10°Sun30.08🌧️16°11°Mon31.08🌧️19°10°Tue1.09☀️21°11°Wed2.09☁️23°13°Thu3.09☀️22°14°Fri4.09☁️21°15°Sat5.09🌧️20°13°Sun6.09☀️20°12°Mon7.09🌧️20°12°Tue8.09☁️19°12°pollution-alert.com · August 27, 2026

16-day weather forecast for Santiago: today around 17°C (cloudy), lows near 12°C. Daily temperature and conditions, updated every day. A moderate breeze (about 11 km/h) is partially dispersing pollutants today.

☀️ UV Index · 16-day Forecast — Santiago

☀️ UV INDEX · 16-DAY FORECASTSantiago03681111+2.9UV LOWtoday, day maxYou can safely stay in the sun. Sunscreen only matterson very long exposure.3Wed26.081Thu27.086Fri28.084Sat29.086Sun30.086Mon31.086Tue1.096Wed2.096Thu3.096Fri4.096Sat5.096Sun6.095Mon7.096Tue8.096Wed9.094Thu10.090-2 low3-5 moderate6-7 high8-10 very high11+ extremepollution-alert.com · August 27, 2026

The UV index in Santiago today is 2.9 (low).

📍 Air quality in nearby cities

Live PM2.5 around Santiago — compare nearby locations.

Frequently asked questions

Is the air safe to breathe in Santiago today?
The current average PM2.5 across Santiago is about 49 µg/m³, rated “Unhealthy for Sensitive Groups”. Sensitive groups should limit time outdoors and consider a mask; everyone should reduce prolonged exertion.
What is the current PM2.5 level in Santiago?
Right now PM2.5 in Santiago averages about 49 µg/m³ (“Unhealthy for Sensitive Groups”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.
Which day last week had the worst air in Santiago?
Over the past week, the highest daily PM2.5 in Santiago was recorded on Monday, August 24 (about 88 µg/m³).
What is the UV index in Santiago today?
The UV index in Santiago today is 2.9 (low).
Does today's wind help disperse smog in Santiago?
A moderate breeze (about 11 km/h) is partially dispersing pollutants today.
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.