Soutenez Time.now : Rejoignez notre Plan Premium pour une expérience sans publicité ! Soutenez-nous : Passez Premium sans pub !

🇺🇸 Indice de qualité de l'air (AQI) à Flagstaff, États-Unis

Sunny
22°C
Sunny
INDICE AQI
28
Norme US EPA

Niveau PM 2.5
5.05
µg/m³

Indice US EPA
1
Bon
The current Air Quality Index (AQI) in Flagstaff is recorded at 28 as of 4 o'clock in the afternoon local time this dimanche, 24 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 Flagstaff currently falls into the Good category. With a fine particulate matter (PM2.5) concentration of 5.0 µg/m³, the air pollution levels are considered minimal. This AQI rating indicates that the air is fresh and healthy for the general public, including children and those with respiratory sensitivities. For the AQI across entire États-Unis, you can also view the Indice de qualité de l'air (AQI) à États-Unis covering other major urban centers and local monitoring stations.

Recommandations sanitaires pour les résidents de Flagstaff

Air quality is considered satisfactory, and air pollution poses little or no risk. It is a great day for outdoor activities in Flagstaff.

Pollution de l'air à Flagstaff : Analyse détaillée des polluants

PM 2.5
5.0
µg/m³
PM 10
8.9
µg/m³
Nitrogen Dioxide (NO2)
5.2
µg/m³
Ozone (O3)
90.0
µg/m³
Carbon Monoxide (CO)
146.8
µg/m³
Sulfur Dioxide (SO2)
1.1
µg/m³

Météo actuelle à Flagstaff

🌡️ 22°C (Ressenti 22°)
🌬️ 27 km/h SSW
💧 18% Humidité
🧭 1023 hPa
👁️ 16.0 km Visibilité
☀️ Indice UV : 8.5
🌅 Lever du soleil: 05:16 AM
🌇 Coucher du soleil: 07:30 PM
🌡️ Point de rosée : -4°C

Frequently Asked Questions about Air Quality in Flagstaff

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

L'indice actuel de qualité de l'air à Flagstaff est 28— catégorisé comme Good.

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

Aujourd'hui, la qualité de l'air à Flagstaff est classée Good sur l'échelle de l'EPA américaine.

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

La concentration de particules fines (PM2,5) dans l’air de Flagstaff est actuellement de 5.0 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 Flagstaff en ce moment ?

La concentration en particules grossières (PM10) dans Flagstaff est actuellement de 8.9 µg/m³.

Quel est le principal polluant à Flagstaff en ce moment ?

Le principal polluant à Flagstaff en ce moment est Carbon Monoxide (CO) à 146.85 µg/m³.

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

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

Comment lire l'indice de qualité de l'air pour Flagstaff

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

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 Flagstaff ?

Pollution in Flagstaff is primarily driven by 26.6 km/h SSW winds, local traffic emissions, and industrial activity, which influence the current PM2.5 concentration of 5.05 µg/m³.

L'IQA à Flagstaff est-il sûr aujourd'hui ?

Today's AQI is 28, which is categorized as Bon. This means the air quality is bon for the general population.