Nights are warming, days stay steady in Uttar Pradesh

  • Jun 14, 2025

Climate records from Uttar Pradesh since 1979 reveal a subtle but important pattern. When we look at the monthly averages of daily minimum and maximum temperatures, we find that nighttime temperatures (minimums) have steadily increased throughout the year (yearly average increase is more than 5%), with stronger changes observed across most months except during May to August. Daytime temperatures (maximums), however, have shown little to no increase. In fact, during the peak summer months (April to June), the monthly average of daily maximum temperatures has slightly decreased. A potential factor behind this contrast is aerosol pollution, tiny airborne particles from industrial activity, vehicles, and crop burning. These are most concentrated in the summer months (April-June) and can block sunlight during the day, limiting surface heating. Why does this matter? Warmer nights reduce the natural cooling period, affecting human health, crop resilience, and energy demand. For farmers and urban planners alike, recognizing these changes is essential for adapting to evolving climate risks. The message is: Even if our days feel the same, our nights are warming. Stay tuned for more such insights as we continue to decode climate patterns that shape our daily lives.