🇭🇰 Indice de qualité de l'air (AQI) à Tuen Mun, Hong Kong

28°C

Sunny

The current Air Quality Index (AQI) in Tuen Mun is recorded at 64 as of 3 o'clock in the afternoon local time this mercredi, 27 mai 2026. This real-time AQI score is based on the highest-risk pollutant measured by local monitoring stations. According to the US EPA health standard, air quality in Tuen Mun currently falls into the Moderate category. The PM2.5 pollution levels are currently measured at 16.2 µg/m³. While this AQI level is acceptable for most people, those who are unusually sensitive to air pollution should consider reducing prolonged or heavy exertion outdoors. For the AQI across entire Hong Kong, you can also view the Indice de qualité de l'air (AQI) à Hong Kong covering other major urban centers and local monitoring stations.

Recommandations sanitaires pour les résidents de Tuen Mun

⚠️

Air quality is acceptable. However, for some pollutants there may be a moderate health concern for a very small number of people. Sensitive groups should consider reducing prolonged outdoor exertion.

Pollution de l'air à Tuen Mun : Analyse détaillée des polluants

PM 2.5

16.2

µg/m³

PM 10

19.9

µg/m³

Nitrogen Dioxide (NO2)

34.6

µg/m³

Ozone (O3)

36.0

µg/m³

Carbon Monoxide (CO)

163.8

µg/m³

Sulfur Dioxide (SO2)

26.8

µg/m³

Météo actuelle à Tuen Mun

🌡️ 28°C (Ressenti 33°)

🌬️ 17 km/h S

💧 81% Humidité

🧭 1008 hPa

👁️ 10.0 km Visibilité

☀️ Indice UV : 9.2

🌅 Lever du soleil: 05:40 AM

🌇 Coucher du soleil: 07:02 PM

🌡️ Point de rosée : 25°C

Frequently Asked Questions about Air Quality in Tuen Mun

Quelle est la qualité de l'air (AQI) à Tuen Mun en ce moment ?

L'indice actuel de qualité de l'air à Tuen Mun est 64— catégorisé comme Moderate.

L'air de Tuen Mun est-il sûr à respirer aujourd'hui ?

Aujourd'hui, la qualité de l'air à Tuen Mun est classée Moderate sur l'échelle de l'EPA américaine.

Quel est le niveau de PM2.5 à Tuen Mun en ce moment ?

La concentration de particules fines (PM2,5) dans l’air de Tuen Mun est actuellement de 16.2 µg/m³. Les PM2,5 sont le polluant le plus nocif pour la santé — la recommandation de l’OMS sur 24 heures est de 15 µg/m³.

Quel est le niveau de PM10 à Tuen Mun en ce moment ?

La concentration en particules grossières (PM10) dans Tuen Mun est actuellement de 19.9 µg/m³.

Quel est le principal polluant à Tuen Mun en ce moment ?

Le principal polluant à Tuen Mun en ce moment est Carbon Monoxide (CO) à 163.85 µg/m³.

Est-il sécuritaire de faire de l'exercice à l'extérieur à Tuen Mun aujourd'hui ?

Avec une qualité de l'air actuellement classée Moderate, l'exercice en extérieur à Tuen Mun est généralement considéré comme sûr pour la plupart des gens.

Comment lire l'indice de qualité de l'air pour Tuen Mun

Bon (0-50)

Air is fresh and healthy. Safe for all outdoor activities.

Modéré (51-100)

Acceptable air quality, though sensitive groups should monitor comfort.

Unhealthy (Sensitive) (101-150)

Vulnerable groups (children, elderly) should limit outdoor exertion.

Malsain (151-200)

Everyone begins to experience health effects. Stay indoors where possible.

Très malsain (201-300)

Significant health impact for entire population. Emergency conditions.

Dangereux (301+)

Serious health alert: everyone may experience serious life-threatening effects.

Bon (0-12)

Fine particles are at minimal, safe levels. Air is optimal.

Modéré (12-35)

Acceptable air, but haze may be present in urban areas.

Sensible (35-55)

Individuals with heart or lung disease should limit activity.

Malsain (55-150)

Particulate levels high enough to cause respiratory irritation.

Très malsain (150-250)

Heavy haze. High risk to cardiovascular health for the public.

Dangereux (250+)

Lethal particulate concentrations. Critical neurological and lung risk.

Bon (0-54)

Low levels of dust and coarse particles. Environment is safe.

Modéré (55-154)

Coarse particles may trigger coughing in sensitive groups.

Sensible (155-254)

Visible dust pollution. Sensitive groups should avoid heavy labor.

Malsain (255-354)

Widespread respiratory impacts likely for the population.

Très malsain (355-424)

Dangerous dust and debris levels. Significant warnings issued.

Dangereux (425+)

Extremely high concentrations. Stay inside with filtration.

Bon (0-54)

Surface ozone levels are within a safe, natural range.

Modéré (55-70)

Acceptable air, but sensitive individuals may feel chest tightness.

Sensible (71-85)

Rising ozone can trigger airway inflammation in active children.

Malsain (86-105)

Avoid heavy outdoor work during the hottest part of the day.

Très malsain (106-200)

Serious lung function reduction likely across the public.

Dangereux (201+)

Emergency ozone levels. Risk of permanent lung tissue damage.

Bon (0-53)

Nitrogen levels are optimal. Safe for everyone.

Modéré (54-100)

Typical background levels for high-density urban areas.

Sensible (101-360)

Increased risk of respiratory infections for vulnerable groups.

Malsain (361-649)

Significant airway inflammation likely near traffic zones.

Très malsain (650-1249)

Acute respiratory distress potential. High-risk groups stay indoors.

Dangereux (1250+)

Toxic concentrations. Immediate health precautions required.

Bon (0-4.4)

Carbon Monoxide levels are clean and non-toxic.

Modéré (4.5-9.4)

Acceptable; may affect those with specific heart conditions.

Sensible (9.5-12.4)

Reduced oxygen delivery to the heart may occur.

Malsain (12.5-15.4)

Headaches and fatigue may occur in urban canyons.

Très malsain (15.5-30.4)

Significant cardiovascular distress. Mental confusion possible.

Dangereux (30.5+)

Lethal potential. Immediate risk of neurological collapse.

Bon (0-35)

Optimal air quality with no sulfur detection.

Modéré (36-75)

Acceptable air; minor odors possible near industry.

Sensible (76-185)

Bronchoconstriction possible for active asthmatics.

Malsain (186-304)

Respiratory distress likely for the wider population.

Très malsain (305-604)

Significant wheezing and shortness of breath likely.

Dangereux (605+)

Extreme respiratory danger. Significant life risk.

Ressources santé et scientifiques

→ Comment lire l'indice de qualité de l'air de l'US EPA avant de sortir → Comprendre les niveaux de l'indice de qualité de l'air et leur signification → Quand le brouillard se forme et son impact sur la qualité de l'air

Comment cet AQI est-il calculé ?

The primary Air Quality Index (AQI) shown above is calculated using the US EPA Linear Interpolation formula based on PM2.5 concentration (Fine Particulate Matter).

Formule : Ip = [(Ihi - Ilow) / (Chi - Clow)] * (Cp - Clow) + Ilow

PM2.5 actuel : 16.25 µg/m³
Calcul : Votre ville se trouve dans la catégorie « Modéré » (Catégorie 2)."Modéré" (Catégorie 2).

Note: While several pollutants (O3, NO2, SO2) are monitored, PM2.5 is used as the primary "driver" for the main index value as it typically represents the highest health risk.

Questions Fréquemment Posées

Quelle est la principale cause de la pollution de l'air à Tuen Mun ?

Pollution in Tuen Mun is primarily driven by 17.3 km/h S winds, local traffic emissions, and industrial activity, which influence the current PM2.5 concentration of 16.25 µg/m³.

L'IQA à Tuen Mun est-il sûr aujourd'hui ?

Today's AQI is 64, which is categorized as Modéré. This means the air quality is modéré for the general population.