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Chennai Faces Downpours and Hazardous Air Conditions This Week
21 Oct
Summary
- Heavy rainfall expected in Chennai on October 20, 2025
- Air quality reached concerning levels on October 19, 2025
- Wet and humid conditions to persist through the week
On October 20, 2025, the city of Chennai is bracing for heavy rainfall, with temperatures ranging between 25.1°C and 28.9°C and high humidity levels of 80%. The day will begin with cloudy conditions, and temperatures are expected to climb to 28.9°C by the afternoon. Wind speeds will remain gentle at 16.6 km/h, with visibility at 9.5 km, requiring careful navigation on wet roads.
The city's air quality has also been a concern, with an AQI of 131 (Indian standard) and 136 (US standard) recorded on October 19. The main pollutants were PM2.5 at 60 µg/m³, PM10 at 99 µg/m³, and CO levels reaching 529 µg/m³. The weather conditions suggest that indoor activities are preferable, with essential outdoor movements requiring waterproof gear.
Looking ahead, Chennai's weather will remain predominantly wet through the week. October 21 will see moderate rain with temperatures up to 30.7°C, followed by heavy rainfall on October 22 and 23. The precipitation will decrease slightly on October 24 and 25, while October 26 will offer clear conditions with partly cloudy skies. The city's air quality reached its monthly peak on October 19, indicating deteriorating conditions as October ends.
