Is the air quality good in Delhi, India?
As of January 17, 2026, at 2:00 AM PT, Delhi, India, is experiencing extremely poor air quality, with the Air Quality Index (AQI) exceeding 500, placing conditions in the hazardous range. PM2.5 concentrations are 73 times higher than World Health Organization guidelines, resulting in dense smog across the capital.
Visibility has dropped in several areas, and authorities have advised residents to limit outdoor activity and follow pollution-related advisories.
Air quality conditions can change rapidly throughout the day. For a complete, real-time view of current pollution levels, see Delhi’s air quality map.
Although today’s conditions are exceptionally severe, long-term data highlights a persistent problem. In 2024, Delhi’s average PM2.5 concentration was among the highest globally, keeping annual air quality firmly in the unhealthy range and underscoring the city’s chronic exposure to fine particulate pollution.
Delhi, India, ranked as the most polluted major city as of January 17, 2026, at 2:00 AM (PT). Source: IQAir.
When will the air quality improve in Delhi, India?
Short-term improvement depends largely on weather changes. Stronger winds or rainfall can temporarily disperse pollutants, but winter conditions often limit such relief.
Temperature inversions and calm winds frequently trap emissions near the ground, allowing pollution to persist for days or weeks. As a result, air quality is expected to remain highly variable and elevated until more favorable meteorological conditions develop.
Hourly air quality forecast for Delhi, India, as of January 17, 2026, at 2:00 AM (PT). Source: IQAir.
Daily air quality trends in Delhi, India, over the past 30 days. Source: IQAir.
Air quality map of Delhi, India, as of January 17, 2026, at 2:00 AM (PT). Source: IQAir.
What is causing poor air quality in Delhi, India?
Delhi’s severe air pollution is driven by a combination of local and regional sources. Vehicle emissions, industrial activity, coal-based power generation, construction dust, and residential fuel burning form the core of urban pollution.
During winter, seasonal crop residue burning in neighboring states adds large volumes of smoke to the regional airshed. These emissions are intensified by winter inversions and low wind speeds, which prevent pollutants from dispersing and lead to recurring extreme smog episodes across the National Capital Region (1).
How can I protect myself from poor air quality?
- Get a free air quality app for real-time air quality alerts and forecasts.
- Shut doors and windows and set the HVAC to recirculate mode.
- Contribute to your community’s outdoor air quality data.
- Stay indoors when air quality is poor; if you do need to go outdoors, wear a KN95/FFP2 mask.
- Run a high-performance air purifier to filter particles, gases, and other pollutants.
