Evidence ledger

What is confirmed

  • The IMD issued a Yellow Alert for Mumbai and Thane on 31 July 2026.[2]
  • The alert warns of heavy rainfall at isolated locations.[2]
  • Forecast includes cloudy skies, moderate to heavy rain, wind 40‑50 km/h with gusts up to 60 km/h.[2]
  • Maximum temperature expected around 31 °C; minimum around 28 °C.[2]
  • Mumbai’s AQI recorded at 36, classified as Good.[2]
  • Orange Alerts were issued for Palghar and Raigad, indicating heavy to very heavy rain.[2]
  • The IMD forecasted rainfall in parts of India on 31 July 2026.[1][2]

What remains disputed or unverified

No disputed central claims are recorded for this story.

The India Meteorological Department (IMD) issued a Yellow Alert for Mumbai and the adjacent Thane district on 31 July 2026, warning of heavy rainfall at isolated places.[2]

The forecast calls for generally cloudy skies across the city, with rain intensities ranging from moderate to heavy and gusty winds reaching up to 60 km/h during the strongest spells.[2]

Expected weather conditions

Maximum temperature is projected to hover around 31 °C while overnight lows dip to about 28 °C, and wind speeds are expected to stay between 40 and 50 km/h, with gusts of 50‑60 km/h during intense showers.[2]

Mumbai’s Air Quality Index remains in the ‘Good’ category at 36, indicating low health risk despite the monsoon activity.[2]

Wider monsoon outlook

The IMD’s broader monsoon bulletin also issued an Orange Alert for Palghar and Raigad, where heavy to very heavy rain is likely, and forecasted showers in parts of Uttar Pradesh, underscoring a widespread wet spell across northern India on the same day.[1][2]

Version and update history
  1. Version 1 · — Initial source-grounded generation