New Delhi Records Good Air Quality with 44 AQI on May 31, 2026
On May 31, 2026, New Delhi recorded a 'Good' Air Quality Index (AQI) of 44, providing residents with clean air and minimal health risks. The clean air day featured low pollutant concentrations, with fine particulate matter (PM2.5) and coarse particulate matter (PM10) both remaining well within safe limits.
According to recorded weather data, the city's PM2.5 levels stood at 26 micrograms per cubic meter (µg/m³), while PM10 levels were registered at 33 µg/m³. These low concentrations contributed to fresh atmospheric conditions, making outdoor activities safe and comfortable for the public.
Other major air pollutants also remained low. Ozone (O3) levels were measured at 31 parts per billion (ppb). Carbon monoxide (CO) was recorded at 165 ppb, nitrogen dioxide (NO2) stood at 24 ppb, and sulfur dioxide (SO2) was measured at 8 ppb.
Along with the clean air, the city experienced a temperature of 25 degrees Celsius, which provided ideal conditions for outdoor recreation.
The AQI rating system classifies index values between 0 and 50 as 'Good.' Values between 51 and 100 are categorized as 'Moderate,' while the scale continues to 'Poor' (101-200), 'Unhealthy' (201-300), 'Severe' (301-400), and 'Hazardous' (401-500+). New Delhi's rating of 44 comfortably placed it in the safest category.
The weekly comparison shows a notable improvement from earlier in the week. On Sunday, May 24, the AQI was 67, categorized as 'Moderate.' It improved to 47 ('Good') on Monday, May 25, before rising back into the 'Moderate' category. On Tuesday, May 26, the AQI was 81, followed by 96 on Wednesday, May 27, and peaking at 98 on Thursday, May 28.
The air quality then improved significantly on Friday, May 29, dropping to 45, and maintained that exact level of 45 on Saturday, May 30, before dropping further to 44 on May 31. With the AQI remaining below the threshold of 50, environmental conditions presented no significant health risks to the general population of New Delhi.
