WeatherAI Analysis: Phoenix is currently partly cloudy at 37°C. Precipitation is likely — peak probability 73% around 4 AM. Atmospheric instability is elevated (CAPE up to 1061 J/kg) — isolated convective development possible. Sunrise: 5:29AM · Sunset: 7:39PM.
Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.
The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.