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Air quality · Delhi

Delhi AQI today दिल्ली

Updated 3 Nov, 16:21 IST.

206 Poor

Live estimate · modelled (CPCB stations offline)

India’s National AQI (CPCB)15:30 IST, 3 Nov Main pollutant: PM2.5

Breathing discomfort to most people on prolonged exposure.

Official CPCB bulletin (2 Nov, 4 PM): 324 · Very poor · PM2.5 ↗

Same day last year (2025, CPCB): 309 · Very poor

On the US EPA scale: 177 (Unhealthy)

What to do today

  • Long walk or run outside Shorten it
  • Kids playing outside Limit it
  • Airing the house Open briefly
  • Mask outdoors N95 if outside for long

Based on CPCB’s health statement: “Breathing discomfort to most people on prolonged exposure.” General guidance, not medical advice.

Last 24 hours

16:00 · 210 17:00 · 209 18:00 · 208 19:00 · 207 20:00 · 206 21:00 · 204 22:00 · 202 23:00 · 201 00:00 · 200 01:00 · 199 02:00 · 203 03:00 · 203 04:00 · 202 05:00 · 200 06:00 · 198 07:00 · 197 08:00 · 197 09:00 · 199 10:00 · 201 11:00 · 201 12:00 · 201 13:00 · 201 14:00 · 200 15:00 · 206 Now

Each bar is the city estimate at that hour. Like CPCB, it is a 24-hour average (8 hours for CO and O₃), so the bars move slowly.

Show as a table
TimeAQI
Mon 16:00210
Mon 17:00209
Mon 18:00208
Mon 19:00207
Mon 20:00206
Mon 21:00204
Mon 22:00202
Mon 23:00201
Tue 00:00200
Tue 01:00199
Tue 02:00203
Tue 03:00203
Tue 04:00202
Tue 05:00200
Tue 06:00198
Tue 07:00197
Tue 08:00197
Tue 09:00199
Tue 10:00201
Tue 11:00201
Tue 12:00201
Tue 13:00201
Tue 14:00200
Tue 15:00 · Now206

Pollutants

  • PM2.5 92.5 µg/m³ 206
  • PM10 123 µg/m³ 115
  • NO₂ 31.9 µg/m³ 40
  • O₃ 121 µg/m³ 131
  • CO 0.78 mg/m³ 39
  • SO₂ 21.5 µg/m³ 27

Modelled for the city (CAMS), not measured: 24-hour averages, 8-hour for CO and O₃, corrected to match CPCB’s recent bulletins.

Last 30 days (official)

Worst: 324 (2 Nov) · Best: 60 (30 Oct)

Last 30 days (official)
4 Oct187 Moderate
6 Oct179 Moderate
7 Oct136 Moderate
8 Oct162 Moderate
9 Oct176 Moderate
10 Oct122 Moderate
11 Oct111 Moderate
12 Oct83 Satisfactory
13 Oct158 Moderate
14 Oct181 Moderate
15 Oct149 Moderate
16 Oct90 Satisfactory
17 Oct159 Moderate
18 Oct187 Moderate
19 Oct139 Moderate
20 Oct179 Moderate
21 Oct245 Poor
22 Oct223 Poor
23 Oct230 Poor
24 Oct191 Moderate
25 Oct153 Moderate
26 Oct174 Moderate
27 Oct197 Moderate
28 Oct229 Poor
29 Oct222 Poor
30 Oct60 Satisfactory
31 Oct117 Moderate
1 Nov261 Poor
2 Nov324 Very poor

CPCB’s official daily AQI (the 4 PM bulletin, a 24-hour average). CPCB ↗

Where this number comes from

CPCB stopped publishing hourly station data in September 2026, so the live estimate is modelled: CAMS forecast concentrations, averaged over CPCB’s own windows, scored with CPCB’s sub-index and scaled to match this city’s recent bulletins. The 4 PM figure is still CPCB’s own measurement.

Full methodology · Population: Delhi

Nearby cities

City AQI
Noida Uttar Pradesh 224
Ghaziabad Uttar Pradesh 231
Gurugram Haryana 195
Faridabad Haryana 142
Greater Noida Uttar Pradesh 282
Meerut Uttar Pradesh 210
  • Good 0–50
  • Satisfactory 51–100
  • Moderate 101–200
  • Poor 201–300
  • Very poor 301–400
  • Severe 401–500

Questions

What is Delhi's AQI right now?
Delhi's live estimate is 206 (Poor) at 15:30 IST, 3 Nov, modelled while CPCB’s stations are offline. CPCB's official bulletin (2 Nov, 4 PM) was 324 (Very poor).

What is the main pollutant in Delhi today?
PM2.5, according to CPCB's official bulletin (2 Nov, 4 PM).

Is it OK to go for a walk in Delhi today?
Shorten it. CPCB's health statement for “Poor”: Breathing discomfort to most people on prolonged exposure. General guidance, not medical advice.

Why do other apps show a different AQI for Delhi?
Many apps use the US EPA scale, on which the same air scores 177 (Unhealthy). India's National AQI uses different breakpoints, so the two numbers differ even for identical air.