Phoenix Air Quality Moderate, PM2.5 Levels Persist

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Phoenix Air Quality Moderate, PM2.5 Levels Persist

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Phoenix's air quality today registers as **moderate**, with an AQI around 58 to 82, primarily driven by PM2.5 particles at levels like 16 µg/m³.[1][2][6] This places it in the acceptable range for most, though sensitive groups—such as those with asthma—should limit prolonged outdoor exertion.[4][5]

Recent data shows fluctuations: yesterday's levels hit a high of 88 at night but dipped to 40 during the day, influenced by light winds and partly cloudy skies at 20°C with 33% humidity.[1][2] AccuWeather forecasts **poor** conditions persisting through today and into next week, with elevated nitrogen dioxide (NO2) posing risks like coughing or respiratory irritation for vulnerable residents.[3]

In 2025, Phoenix's annual AQI averages 45, a 10.7% worsening from prior years, yet 73% of days stayed within WHO safe limits.[1] Daytime peaks average 59 AQI from 7 AM to noon, dropping to 39 by 5 PM, while nights climb to 74 around midnight.[1] PM10 stands at 28 µg/m³, with minor contributions from CO, SO2, NO2, and ozone.[2]

This winter pattern stems from stagnant air trapping urban pollutants amid cooler temperatures (19°C highs today).[4][5] For optimal health, residents can track real-time updates and opt for indoor activities during peak hours. Overall, while not hazardous, Phoenix's air underscores the value of monitoring in a desert metropolis prone to inversions.[1][3]

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