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

Latest air quality data: Saint-Denis

Locations: Port Louis » Saint-Denis Vacoas-Phoenix »

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

particulate matter (PM2.5) dust - 9 (Good)
particulate matter (PM10) suspended dust - 15 (Good)
ozone (O3) - 68 (Good)
nitrogen dioxide (NO2) - 2 (Good)
sulfur dioxide (SO2) - 2 (Good)
carbon monoxide (CO) - 105 (Good)

Real-time Air Quality Index (AQI) for Saint-Denis, Thursday, August 27, 2026: 1.

AQI 1 Good

What is the air quality in Saint-Denis today? Is the air polluted in Saint-Denis?. Is there smog?

Today (Thursday, August 27, 2026) air quality is good. The air quality has no effect on health. Everyone can continue their outdoor activities normally in Saint-Denis.

What is the current level of PM2.5 in Saint-Denis? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 9 (Good) For comparison, the highest level of PM2.5 in Saint-Denis in the last 7 days was: 10 (Thursday, August 27, 2026) and the lowest: 5 (Monday, August 24, 2026).

What is the level of PM10 today in Saint-Denis? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Saint-Denis is: 15 (Good)

How is the O3 level today in Saint-Denis? (ozone (O3))
68 (Good)

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

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

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

Current data Thursday, August 27, 2026 at 5:00 AM

PM2,5 9 (Good)

PM10 15 (Good)

O3 68 (Good)

NO2 2 (Good)

SO2 2 (Good)

CO 105 (Good)

Data on air pollution from recent days in Saint-Denis

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	10 Good	6 Good	6 Good	5 Good	5 Good	7 Good	7 Good	9 Good
pm10	15 Good	10 Good	10 Good	8 Good	8 Good	11 Good	12 Good	15 Good
o3	75 Moderate	72 Moderate	76 Moderate	75 Moderate	66 Good	66 Good	68 Good	63 Good
no2	2 Good	1 Good	2 Good	1 Good	1 Good	1 Good	1 Good	1 Good
so2	2 Good	1 Good	2 Good	2 Good	2 Good	2 Good	1 Good	1 Good
co	117 Good	102 Good	109 Good	98 Good	96 Good	89 Good	94 Good	98 Good

data source »

Saint-Denis

Thursday, August 27, 2026 at 5:00 AM

PM2,5 8.8 (Good)

particulate matter (PM2.5) dust

PM10 15 (Good)

particulate matter (PM10) suspended dust

O3 68 (Good)

ozone (O3)

NO2 1.9 (Good)

nitrogen dioxide (NO2)

SO2 1.8 (Good)

sulfur dioxide (SO2)

CO 105 (Good)

carbon monoxide (CO)

Saint-Denis

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	8.7	7.1	6.6	4.6	5.2	6.1	5.9	9.7
pm10	15	12	11	7.6	8.3	10	10	15
o3	63	68	66	66	75	76	72	75
no2	1	1.2	1.3	1.2	1.4	1.7	1.3	2.1
so2	1	1.3	1.9	1.6	2	1.8	1.3	2.3
co	98	94	89	96	98	109	102	117

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

🌦️ Weather · 16-day Forecast — Mauritius

16-day weather forecast for Mauritius: today around 23°C (rain), lows near 16°C. Daily temperature and conditions, updated every day. Strong wind (about 18 km/h) is actively clearing smog and dust away.

☀️ UV Index · 16-day Forecast — Mauritius

The UV index in Mauritius today is 7.5 (high) — unprotected fair skin can burn in about 25 minutes.

Frequently asked questions

Is the air safe to breathe in Saint-Denis today?

The current average PM2.5 across Saint-Denis is about 9 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Saint-Denis?

Right now PM2.5 in Saint-Denis averages about 9 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 Saint-Denis?

Over the past week, the highest daily PM2.5 in Saint-Denis was recorded on Thursday, August 27 (about 10 µg/m³).

What is the UV index in Saint-Denis today?

The UV index in Saint-Denis today is 7.5 (high) — unprotected fair skin can burn in about 25 minutes.

Does today's wind help disperse smog in Saint-Denis?

Strong wind (about 18 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.