Phoenix temperatures track seasonal sun angle and monsoon moisture, probably why. At 27.36°C, this reading sits near the bottom 10th percentile of 129 records (range 22.32–38.18°C), marking the most extreme, coolest reading in months.

Driven mainly by seasonal cooling and winter air masses, cause uncertain beyond that. At 15.09°C, this reading sits near the bottom of 129 recorded observations, in the lowest 2 percent, marking the coldest stretch in months for this series.

Beijing's temperature series, driven mainly by seasonal cycles and weather fronts, has ranged 14.38–29.44°C over 128 readings. Today's 14.38°C sits at the very bottom, the coldest ever recorded here. Exact trigger: unclear, likely seasonal.

This reading sits at the very bottom of 2,784 recorded observations, the coldest ever logged for this series. Temperature here typically tracks seasonal cycles and weather systems; exact cause unclear. Historically, such extremes mark outlier days rather than a shift in long-term climate patterns.

Solar irradiance tracks sun angle, day length, and cloud or dust cover. This reading is the lowest of 122 recorded observations, below the typical range of 5.09 to 8.33. Likely cause: unclear.

Driven mainly by cloud cover and seasonal sun angle, causes uncertain beyond that. At 5.84 kWh/m2/day, this sits at the 55th percentile of 121 readings (range 2.65-7.59), the most extreme value since September 27, 2026 - an unremarkable, middling level historically.