Air Quality in Delhi
Delhi experiences some of the sharpest AQI swings in India because the city is landlocked and ringed by industrial clusters. Winter stubble burning in neighbouring states, heavy traffic, and calm winds combine to trap fine particulate matter over the capital.
For households, the practical story is cumulative winter dose rather than a single bad afternoon. Temperature inversions after Diwali-period emissions and regional agricultural smoke can keep PM2.5 elevated for many consecutive days. That pattern is why a clean-room setup, spare HEPA filters, and school-transport contingency plans matter more in Delhi NCR than in cities where pollution spikes are brief.
Within the capital, station readings can diverge sharply: traffic corridors and industrial edges often run higher than greener institutional campuses. Use the highest nearby station as a caution signal for outdoor sports, then confirm local authority GRAP stages before assuming restrictions apply citywide. Metro and carpool choices cut both personal roadside exposure and contribution to congestion.
Summer is not risk-free. Dust events raise PM10, and sunny afternoons can lift ozone even when morning particulate readings look manageable. Check dominant pollutant before planning long outdoor work—particle days and ozone days call for different timing.
Key Pollution Drivers
- Vehicular emissions and resuspended dust along the Ring Road and arterial corridors
- Seasonal crop residue burning across Punjab and Haryana that drifts toward the city
- Coal-fired power plants and industrial units in the National Capital Region
Seasonal Patterns
- October to January sees persistent smog with PM2.5 dominating the AQI for days at a time
- Pre-monsoon dust storms raise PM10 levels, especially in western boroughs
- Summer ozone levels rise on sunny afternoons when traffic and heat interact
Station Highlights
Station-level information will appear once the network shares live readings.
Pollutant Breakdown
Pollutant-level information will populate when stations share detailed readings.
Health Advisory
- Use indoor air purifiers overnight during winter and ventilate briefly during mid-day when AQI dips
- Schools, joggers, and delivery workers should shift activity to late mornings on high pollution days
- Individuals with cardiac conditions should monitor blood oxygen levels and stay hydrated
Local Actions & Resources
- Follow advisories from the Delhi Pollution Control Committee and Graded Response Action Plan alerts
- Prefer metro, e-rickshaws, or carpooling during severe episodes to cut road congestion
- Support housing societies that install mechanical dust suppression and maintain green belts
What this page helps you do
Trend Explorer
Use the interactive charts below to analyse pollutant trends across different time ranges. Switch between pollutants to determine which one drives the overall AQI during specific hours of the day.
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