# Delhi AQI October 2026: Capital Breathes Its Cleanest October Air in Eight Years as Average Reading Falls to 166

URL: https://technosports.co.in/delhi-aqi-october-2026-capital-breathes/  
Published: 2026-11-01  
Updated: 2026-11-01  
Author: Reetam Bodhak

A city used to hazy October mornings just got a rare piece of good news. Delhi’s air in October 2026 was the cleanest for the month in eight years, according to the Union Environment Ministry. Here’s what the numbers say and why it happened.

### Delhi AQI Headline Numbers

Delhi’s average [Air Quality Index](https://en.wikipedia.org/wiki/Air_quality_index) for October was **166**, the lowest October reading in eight years. For context, a lower AQI means cleaner air.

| October | Average AQI |
| --- | --- |
| **2026** | **166** |
| 2025 | 223 |
| 2024 | 234 |
| 2023 | 219 |
| 2022 | 210 |

That’s a drop of about 57 points from last October, a big jump for a single year.

### Year-to-Date Picture (January to October)

The improvement shows up over the longer stretch too. The city’s average AQI for the first ten months of 2026 was **167**, compared with 170 in 2025 and 184 in 2024. Only 2020, the pandemic year, was lower at 156.

![Delhi](https://images.technosports.co.in/2026/11/Delhi-AQI-2.avif)

| Year | Jan to Oct average AQI |
| --- | --- |
| 2026 | 167 |
| 2025 | 170 |
| 2024 | 184 |
| 2023 | 172 |
| 2022 | 187 |
| 2021 | 179 |
| 2020 | 156 |
| 2019 | 192 |
| 2018 | 201 |

### What Helped? Mostly the Rain

Weather played a starring role. Delhi received **61.4 mm of rain** in the 24 hours ending 8:30 am on Friday, making it the **wettest October day in four years** and the sixth wettest since 1951. Safdarjung alone recorded 123.3 mm, against a monthly normal of just 15.1 mm.

The result was dramatic. On October 30, the city’s AQI fell to **60**, the cleanest reading since October 10, 2022.

### Cleaner Days, Fewer Bad Ones

The year’s tally of better air days stands out as well:

- **220 days** in the “Good to Moderate” range from January to October, the most since 2018 (leaving out 2020).
- **84 days** in the “Poor to Severe+” range this year, down from 104 in both 2025 and 2024.
- In October itself: **22 moderate days**, **5 poor days** and **3 satisfactory days**.

Another notable shift: this is the first time since 2015 that the city’s air slipped into the “poor” category only in the second half of October. In earlier years pollution usually worsened sooner.

### Should We Celebrate Yet?

Cautiously. The rain gave the city a big helping hand, and the colder months are when Delhi’s air traditionally gets tougher to breathe. The trend over the year is encouraging, but a few clean weeks don’t mean the problem is solved.

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### FAQs

Q1. What was Delhi’s average AQI in October 2026?

It was 166, the lowest October reading in eight years, according to the Union Environment Ministry.

Q2. Why did Delhi’s air improve in October?

Heavy rain, including the wettest October day in four years, helped clear pollutants. The AQI hit 60 on October 30.