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

Latest air quality data: Santa Clara

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

particulate matter (PM2.5) dust - 7 (Good)
particulate matter (PM10) suspended dust - 11 (Good)
ozone (O3) - 25 (Good)
nitrogen dioxide (NO2) - 7 (Good)
sulfur dioxide (SO2) - 3 (Good)
carbon monoxide (CO) - 135 (Good)

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

AQI 1 Good

What is the air quality in Santa Clara today? Is the air polluted in Santa Clara?. 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 Santa Clara.

What is the current level of PM2.5 in Santa Clara? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 7 (Good) For comparison, the highest level of PM2.5 in Santa Clara in the last 7 days was: 13 (Sunday, August 23, 2026) and the lowest: 6 (Tuesday, August 25, 2026).

What is the level of PM10 today in Santa Clara? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Santa Clara is: 11 (Good)

How is the O3 level today in Santa Clara? (ozone (O3))
25 (Good)

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

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

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

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

PM2,5 7 (Good)

PM10 11 (Good)

O3 25 (Good)

NO2 7 (Good)

SO2 3 (Good)

CO 135 (Good)

Data on air pollution from recent days in Santa Clara

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	7 Good	6 Good	6 Good	13 Moderate	13 Moderate	8 Good	7 Good	11 Good
pm10	10 Good	9 Good	9 Good	28 Moderate	23 Moderate	12 Good	10 Good	16 Good
o3	33 Good	38 Good	31 Good	37 Good	46 Good	39 Good	43 Good	44 Good
no2	3 Good	3 Good	4 Good	4 Good	3 Good	3 Good	3 Good	3 Good
so2	2 Good	2 Good	2 Good	3 Good	3 Good	2 Good	2 Good	2 Good
co	117 Good	134 Good	127 Good	148 Good	148 Good	123 Good	132 Good	144 Good

data source »

Santa Clara

Wednesday, August 26, 2026 at 9:00 PM

PM2,5 7.3 (Good)

particulate matter (PM2.5) dust

PM10 11 (Good)

particulate matter (PM10) suspended dust

O3 25 (Good)

ozone (O3)

NO2 7.1 (Good)

nitrogen dioxide (NO2)

SO2 2.9 (Good)

sulfur dioxide (SO2)

CO 135 (Good)

carbon monoxide (CO)

Santa Clara

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	11	7.5	7.8	13	13	6	5.9	6.6
pm10	16	10	12	23	28	8.5	8.9	10
o3	44	43	39	46	37	31	38	33
no2	3.4	3.1	3	3.4	3.7	3.6	3.2	3.4
so2	2.2	2.3	2.3	2.8	2.7	2.4	2.4	2.3
co	144	132	123	148	148	127	134	117

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

🌦️ Weather · 16-day Forecast — Cuba

16-day weather forecast for Cuba: today around 35°C (rain), lows near 24°C. Daily temperature and conditions, updated every day. Strong wind (about 28 km/h) is actively clearing smog and dust away.

☀️ UV Index · 16-day Forecast — Cuba

The UV index in Cuba today is 8.7 (very high) — unprotected fair skin can burn in about 25 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Santa Clara — compare nearby locations.

Havana 5 µg/m³
Santiago de Cuba 19 µg/m³
Camagüey 6 µg/m³
Holguín 10 µg/m³
Guantánamo 12 µg/m³
Arroyo Naranjo 5 µg/m³
Las Tunas 9 µg/m³
Bayamo 10 µg/m³

Frequently asked questions

Is the air safe to breathe in Santa Clara today?

The current average PM2.5 across Santa Clara is about 7 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Santa Clara?

Right now PM2.5 in Santa Clara averages about 7 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 Santa Clara?

Over the past week, the highest daily PM2.5 in Santa Clara was recorded on Sunday, August 23 (about 13 µg/m³).

What is the UV index in Santa Clara today?

The UV index in Santa Clara today is 8.7 (very high) — unprotected fair skin can burn in about 25 minutes.

Does today's wind help disperse smog in Santa Clara?

Strong wind (about 28 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.