London air quality today
Air quality in London is currently good, with a European index of 31. The concentration of PM2.5 particles is 5 µg/m³ and PM10 is 10 µg/m³. The air is good and safe to spend time outdoors. Over the next 24 hours the air will be cleanest around 04:00 (index 18) and most polluted around 08:00 (index 49).
Current air quality in London
Good
31EAQI
The air is good and safe to spend time outdoors.
- PM2.5
- 5 µg/m³
- PM10
- 10 µg/m³
- Ozone
- 44 µg/m³
Model estimate (Open-Meteo / CAMS) for the city location. It may differ from readings at local stations.
The next 24 hours at a glance
- Index now
- 31
- Good
- Average index
- 31
- Good
- Cleanest air
- 04:00
- index 18
- Most polluted hour
- 08:00
- index 49
- PM2.5
- 5 µg/m³
- PM10
- 10 µg/m³
Air quality in London by the hour
- 31Now
- 4507:00
- 4908:00
- 4709:00
- 4310:00
- 3911:00
- 3312:00
- 2713:00
- 2414:00
- 2615:00
- 2616:00
- 2417:00
- 2618:00
- 2719:00
- 3020:00
- 3421:00
- 3422:00
- 3123:00
- 2800:00
- 2601:00
- 2302:00
- 2203:00
- 1804:00
- 2105:00
European Air Quality Index (EAQI) by the hour, a model estimate. A shorter bar means cleaner air.
Pollen in London
No pollen is currently detected in the air.
Model estimate (Open-Meteo / CAMS). It may differ from local measurements.
Frequently asked questions
How is the air quality in London today?
It is currently good (European index 31). PM2.5 is 5 µg/m³, PM10 is 10 µg/m³ and ozone is 44 µg/m³. The average for the next 24 hours is around 31.
What does the European Air Quality Index (EAQI) mean?
The EAQI is a scale used by the European Environment Agency. Up to 20 is excellent air, up to 40 good, up to 60 moderate, up to 80 poor, up to 100 very poor, and above 100 extremely poor. The index is calculated from the concentration of fine particles (PM2.5 and PM10), ozone, nitrogen dioxide and sulphur dioxide.
What are PM2.5 and PM10 particles?
They are tiny particles in the air with a diameter of up to 2.5 and 10 micrometres. They come from traffic, heating and industry, and there are the most of them in winter, on calm days without wind or rain. PM2.5 is more dangerous because it penetrates deep into the lungs.
Are these measurements or estimates?
This is an atmospheric model estimate (Open-Meteo / CAMS) for the city location, not a reading from a local station. Values may therefore differ from station data in some parts of the city.
When is the air cleanest?
The air is usually cleaner during stronger winds, after rain and in the afternoon, when the cold layer near the ground breaks up. It is worst early in the morning and in the evening in the cold part of the year, when heating and traffic increase.