Climate News — anomaly tracker

Where the weather is running hot, cold, or right on baseline. We compare the past 30 days of actual conditions to each city's 30-year climate average — same month, same place. Updated weekly.

📅 Snapshot 2026-08-12 → 2026-09-11 · 500 cities · last refresh 2026-09-13
📰 Biggest story this week

🇷🇺 Khabarovsk, Russia

Running 10.7°C cooler than typical for August. The past 30 days have averaged 23.9°C against a 30-year baseline of 34.6°C.

See Khabarovsk climate →

🔥 Top 8 running warmest vs typical

❄️ Top 8 running coolest vs typical

🌍 Regional rollup

Average anomaly per world region — quick read on where the broader patterns are running.

How this is built

Every Sunday at 6 AM, our cron job pulls the last 30 days of daily-max temperatures from Open-Meteo's archive for 500 climate-sample cities, averages each to a single number, and compares it to that city's 30-year baseline for whichever calendar month dominates the window. The deltas you see above are pure data.

Single-month windows are noisy — strong signals (≥3°C) flag real anomalies; smaller ones (<1°C) are within typical year-to-year variation. Use this as a trend tracker, not a forecast.