Chennai Air Quality Index Recorded at 46 on May 30, 2026
CHENNAI — The air quality in Chennai was classified as "Good" on Saturday, May 30, 2026, with the Air Quality Index (AQI) recorded at 46. The clean air and a temperature of 32 degrees Celsius made the day ideal for outdoor activities, presenting no health risks to the public.
According to data updated at 7:00 p.m., the concentration of fine particulate matter (PM2.5) in Chennai stood at 27 micrograms per cubic meter (µg/m³), while coarse particulate matter (PM10) was measured at 34 micrograms per cubic meter (µg/m³). Both pollutants remained well within safe limits, making the air clean and suitable for all outdoor activities.
Other major air pollutants also registered minimal concentrations showing no risk to health. Ozone (O3) levels were recorded at 17 parts per billion (ppb), and carbon monoxide (CO) stood at 240 parts per billion (ppb). Additionally, sulfur dioxide (SO2) was measured at 2 parts per billion (ppb), and nitrogen dioxide (NO2) was recorded at 5 parts per billion (ppb).
The rating on May 30 continues a week-long trend of clean air in the city. Over the preceding seven days, Chennai's AQI consistently remained in the safe range, with only one brief fluctuation.
On May 23, the city's AQI was recorded at 50, which is the upper limit of the "Good" category. The following day, May 24, air quality temporarily dipped into the "Moderate" category with an AQI of 56.
However, conditions improved quickly. The AQI returned to "Good" on May 25 at 48, remained at 50 on May 26, and dropped back to 48 on May 27. The clean trend continued into the end of the week, with an AQI of 46 recorded on May 28 and 47 on May 29, before holding at 46 on May 30.
In comparison with other major cities on May 30, Chennai's air quality of 46 AQI was cleaner than New Delhi, which registered an AQI of 57, and Noida at 73. However, it was slightly higher than Mumbai's AQI of 33 and Pune's AQI of 39. Hyderabad recorded an AQI of 47 with a temperature of 37 degrees Celsius.
