The data for this weather forecast has been sourced from AQI.in, providing residents with comprehensive information to plan their daily activities and weekly schedules accordingly.Chennai’s weather forecast for September 13, 2025, indicates a warm and humid day with patchy rain expected, temperatures ranging between 27.2°C and 33.4°C, and moderate air quality conditions.The city recorded an Air Quality Index (AQI) of 63 yesterday, with expected improvements due to anticipated rainfall.The day’s average temperature stands at 30.1°C, accompanied by 63% humidity levels.Wind speeds are forecasted to reach 20.9 km/h, with an 85% probability of rain during late afternoon or evening hours.
Yesterday’s Pollution Levels
Yesterday’s pollution levels showed PM2.5 at 25 µg/m³ and PM10 at 63 µg/m³, while carbon monoxide reached 486 µg/m³.These readings placed the city’s air quality in the moderate category,
potentially affecting sensitive individuals in congested areas
.
Daily Activity Recommendations
The morning presents relatively cooler conditions suitable for outdoor activities.Afternoon weather calls for rain protection, while evening brings favorable conditions for outdoor engagement,
with precautions advised in polluted areas
.
Hydration remains essential due to high humidity, with limited outdoor exposure recommended during peak traffic hours for those sensitive to air quality
.
Weekly Forecast
The weekly forecast through September 19 shows consistent monsoon conditions with temperatures fluctuating between 25.7°C and 35.1°C.Rain is expected throughout the week, with September 14 showing a high of 34.6°C.September 15 presents an 89% chance of rainfall, while September 16 forecasts moderate rain and cooler temperatures.The pattern of patchy rain continues from September 17 through 19, accompanied by slight temperature drops.September 14 appears most suitable for outdoor activities due to lighter predicted rainfall,
though weather conditions may change unexpectedly
.
Air Quality Update & Source
Yesterday’s AQI showed improvement from the previous day’s reading of 70 to 63, suggesting enhanced air quality.Today’s expected rainfall could further improve air conditions, particularly during evening hours.Data for this weather report comes from AQI.in, providing comprehensive information about Chennai’s weather and air quality conditions.The forecast indicates continuation of monsoon weather patterns, with daily rain expected to influence both temperature and air quality levels throughout the week.
Sensitive groups are advised to monitor air quality levels and take necessary precautions, especially in high-traffic areas despite the moderate AQI readings
.The combination of expected rainfall and wind conditions suggests potential improvement in air quality,
though residents should remain prepared for varying weather conditions throughout the day
.
