Phoenix's Air Quality Remains Good with Ozone as Dominant Pollutant

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Phoenix's Air Quality Remains Good with Ozone as Dominant Pollutant

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概要

Phoenix's air quality today stands at a **good** level, with an AQI around 42-64, dominated by ozone (O3), posing little health risk to most residents.[1][2][5] At 10 AM UTC, conditions align with recent daytime peaks, where AQI often hits 57-64 around midday before dropping to 33 by late afternoon.[1]

This mild status reflects February's typical patterns in the Valley, where 56% of 2026 days so far have stayed under WHO safe limits, though 44% exceeded them, signaling considerable risk for sensitive groups like asthmatics.[1] Daytime highs cluster near noon due to sunlight boosting ozone from vehicle emissions and urban heat, while evenings cool to lows around 28-33.[1] North Phoenix mirrors this, with good readings in the 30s-50s.[3]

Winter's "bowl effect" traps pollutants in cooler air, worsened by past events like New Year's 2025 fireworks, which ranked Phoenix worst in the U.S. globally third-worst.[4] Yet today's 20°C temps, low 17-19% humidity, and stable pressure favor dispersion.[2]

Maricopa County monitors via stations like West Phoenix, tracking PM2.5, NO2, and more from EPA and local data.[2][6] Good AQI means satisfactory breathing for all—ideal for biking, hiking Camelback, or desert strolls. To sustain it, skip wood fires and idling cars amid growing urban demands.[1][4]

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