Smog in London — Live Data: AQI, Fine Dust, Wind, UV and Health Advice

3 weather warnings in effect for Canada 😷 Air quality🌊 Coastal / marine🌫️ Fog

Latest air quality data: London

Locations: Toronto » Montréal » Vancouver » Calgary » Ottawa » Edmonton » Mississauga » Winnipeg » Québec » Hamilton » Brampton » Kitchener » Surrey » Halifax » London Okanagan » Victoria » Markham » Buffalo » Oshawa »

Pollution and air quality forecast for London. Today is Thursday, August 27, 2026. The following air pollution values have been recorded for London:

particulate matter (PM2.5) dust - 3 (Good)
particulate matter (PM10) suspended dust - 3 (Good)
ozone (O3) - 104 (Moderate)
nitrogen dioxide (NO2) - 6 (Good)
sulfur dioxide (SO2) - 2 (Good)
carbon monoxide (CO) - 215 (Good)

Real-time Air Quality Index (AQI) for London, Wednesday, August 26, 2026: 2.

AQI 2 Moderate

What is the air quality in London today? Is the air polluted in London?. Is there smog?

Today (Wednesday, August 26, 2026) air quality is moderate in London. Some pollutants in London may slightly affect very few hypersensitive individuals. Air pollutants in London may cause minor breathing discomfort to sensitive people.

What is the current level of PM2.5 in London? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 3 (Good) For comparison, the highest level of PM2.5 in London in the last 7 days was: 8 (Wednesday, August 19, 2026) and the lowest: 3 (Monday, August 24, 2026).

What is the level of PM10 today in London? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in London is: 3 (Good)

How is the O3 level today in London? (ozone (O3))
104 (Moderate)

How high is the level of NO2? (nitrogen dioxide (NO2))
6 (Good)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
2 (Good)

How high is the CO level? (carbon monoxide (CO))
215 (Good)

Current data Wednesday, August 26, 2026 at 9:00 PM

PM2,5 3 (Good)

PM10 3 (Good)

O3 104 (Moderate)

NO2 6 (Good)

SO2 2 (Good)

CO 215 (Good)

Data on air pollution from recent days in London

index	2026-08-26	2026-08-25	2026-08-24	2026-08-23	2026-08-22	2026-08-21	2026-08-20	2026-08-19
pm25	4 Good	4 Good	3 Good	5 Good	5 Good	3 Good	5 Good	8 Good
pm10	4 Good	4 Good	3 Good	5 Good	5 Good	3 Good	5 Good	8 Good
o3	75 Moderate	50 Good	42 Good	57 Good	81 Moderate	60 Good	57 Good	77 Moderate
no2	9 Good	8 Good	5 Good	3 Good	7 Good	9 Good	9 Good	6 Good
so2	2 Good	1 Good	1 Good	1 Good	1 Good	2 Good	2 Good	1 Good
co	232 Good	185 Good	140 Good	128 Good	186 Good	221 Good	182 Good	185 Good

data source »

Quality of life in London

Green and Parks in the City

London 84%

United States: 70% Venezuela: 41% Iceland: 72%

particulate matter PM2.5

London 8 (Good)

Pleasure of spending time in the city

London 82%

United States: 75% The Bahamas: 53% Venezuela: 41% Iceland: 89%

particulate matter PM10

London 15 (Good)

Air Pollution

London 29%

United States: 29% The Bahamas: 52% Venezuela: 59% Iceland: 13%

Garbage Disposal

London 69%

United States: 71% The Bahamas: 29% Venezuela: 18% Iceland: 79%

Availability and quality of drinking water

London 80%

United States: 71% The Bahamas: 55% Venezuela: 28% Iceland: 96%

Cleanliness and tidiness

London 63%

United States: 60% The Bahamas: 35% Venezuela: 22% Iceland: 75%

Noise and Light pollution

London 50%

United States: 47% The Bahamas: 39% Venezuela: 47% Iceland: 23%

Water Pollution

London 51%

United States: 44% The Bahamas: 58% Venezuela: 76% Iceland: 8.4%

Source: Numbeo

London

Wednesday, August 26, 2026 at 9:00 PM

PM2,5 3.1 (Good)

particulate matter (PM2.5) dust

PM10 3.1 (Good)

particulate matter (PM10) suspended dust

O3 104 (Moderate)

ozone (O3)

NO2 6.1 (Good)

nitrogen dioxide (NO2)

SO2 2.1 (Good)

sulfur dioxide (SO2)

CO 215 (Good)

carbon monoxide (CO)

London

index	2026-08-19	2026-08-20	2026-08-21	2026-08-22	2026-08-23	2026-08-24	2026-08-25	2026-08-26
pm25	7.7	5	3.2	5	4.8	3.4	3.6	3.8
pm10	8	5.2	3.3	5	4.9	3.5	3.7	3.8
o3	77	57	60	81	57	42	50	75
no2	6	9.5	9.3	7.2	2.7	5	7.7	9.4
so2	1.3	1.6	1.5	1.3	0.56	0.87	0.77	1.8
co	185	182	221	186	128	140	185	232

* Pollution data source: https://openaq.org () The data is licensed under CC-By 4.0

🌦️ Weather · 16-day Forecast — London

16-day weather forecast for London: today around 24°C (partly cloudy), lows near 12°C. Daily temperature and conditions, updated every day. Strong wind (about 23 km/h) is actively clearing smog and dust away.

☀️ UV Index · 16-day Forecast — London

The UV index in London today is 3.9 (moderate) — unprotected fair skin can burn in about 50 minutes.

📍 Air quality in nearby cities

Live PM2.5 around London — compare nearby locations.

Toronto 7 µg/m³
Montréal 11 µg/m³
Vancouver 10 µg/m³
Calgary 8 µg/m³
Ottawa 6 µg/m³
Edmonton 7 µg/m³
Mississauga 7 µg/m³
Winnipeg 5 µg/m³

Frequently asked questions

Is the air safe to breathe in London today?

The current average PM2.5 across London is about 3 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in London?

Right now PM2.5 in London averages about 3 µg/m³ (“Good”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which day last week had the worst air in London?

Over the past week, the highest daily PM2.5 in London was recorded on Wednesday, August 19 (about 8 µg/m³).

What is the UV index in London today?

The UV index in London today is 3.9 (moderate) — unprotected fair skin can burn in about 50 minutes.

Does today's wind help disperse smog in London?

Strong wind (about 23 km/h) is actively clearing smog and dust away.

How is air quality measured?

Air quality here is based on PM2.5 — the concentration of fine particulate matter in µg/m³. Lower values mean cleaner air. Data is updated daily from Open-Meteo.