Madrid: PM2.5 by month
Mean
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
This month
18
-
-
15
10
9
14
21
30
-
-
-
29
28
Monthly means of quality-checked sensors, as in the Data Hub trend; the current month is still incomplete, “-” means no data.
Madrid air quality now
Spain · The summary is refreshed every 15 minutes.
October 23
The air is clean now
Madrid
11°C
Cloudy
33AQI
1024hPa
Atmospheric
pressure
74%
Humidity
Madrid now (05:00 local time): PM2.5 5.9 µg/m³. Open methodology and data in JSON: Methodology and data sources · JSON
Right now in Madrid, PM2.5 averages 5.9 µg/m³ — “good” on the US EPA scale (approximate, from hourly readings). Mean of 4 sensors on the Atmy network, readings from 04:43–04:50 local time (02:43–02:50 UTC), summary prepared at 05:00 local time. Median: 2.1 µg/m³; range across sensors: 0.0–19.2 µg/m³.
In Madrid the air is good right now (approximate, US EPA scale). From 16:00 to 05:00 local time the city mean PM2.5 rose from 1.0 to 5.9 µg/m³. The highest hour was 01:00 with 9.5 µg/m³.
Light wind (1 m/s) in the evening or at night, as the air cools, possibly traps particles near the ground (a temperature inversion).
Weather now: cloudy, 11°C, wind 1 m/s, humidity 74%. No major change in the wind is expected in the coming hours. By 16:00 the temperature will be about 18°C.
Written automatically at 05:00 local time (03:00 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.
4 km/h
Wind, SW
0 mm
Precipitation today
Pollution accumulation index now
48%An estimate of weather conditions · not a PM2.5 forecast
Now4852
05.0013.0020.0004.00
Pollution accumulation forecast
Today — October 23
19°/10°
Index by time of day
48/100Moderate
- 48/100
Night - 37/100
Morning - 9/100
Day - 24/100
Evening
Saturday — October 24
18°/5°
Index by time of day
55/100Moderate
- 55/100Night
- 40/100Morning
- 10/100Day
- 21/100Evening
Sunday — October 25
20°/6°
Index by time of day
55/100Moderate
- 55/100Night
- 44/100Morning
- 9/100Day
- 23/100Evening
Monday — October 26
22°/8°
Index by time of day
59/100Moderate
- 59/100Night
- 45/100Morning
- 10/100Day
- 24/100Evening
Tuesday — October 27
20°/9°
Index by time of day
56/100Moderate
- 56/100Night
- 42/100Morning
- 9/100Day
- 20/100Evening
Wednesday — October 28
18°/10°
Index by time of day
52/100Moderate
- 52/100Night
- 40/100Morning
- 8/100Day
- 20/100Evening
Forecast of conditions that trap pollution near the surface
Weather
11°
Cloudy. Feels like 9°C
- Morning10°C70%
- Day
18°C41% - Evening14°C46%
Wind
4km/hWind from the SW
14km/hWind gusts
Wind force: 1
Light wind is expected over the next few hours.
10-day weather forecast for Madrid
Spain
- TodayOct 2319°C10°C
- SatOct 2418°C5°C
- SunOct 2520°C6°C
- MonOct 2622°C8°C
- TueOct 2720°C9°C
- WedOct 28
18°C10°C - ThuOct 2920°C13°C
- FriOct 3021°C11°C
- SatOct 3121°C11°C
- SunNov 120°C12°C
Where in Madrid is the air worse?
See all sensors
Highest current reading: 19.2 µg/m³ (El Cañaveral - Villas Amazonia). Lowest: 0.0 µg/m³ (Centro). The list shows every sensor, highest first.
- Good
- Moderate
- Unhealthy for sensitive groups
- Unhealthy
- Very unhealthy
- Hazardous
Source: atmy.ai monitoring network
Who provides the data
Sensors in the summary by network: AirGradient — 3 sensors, Sensor.Community — 1 sensor.
Atmy shows the networks’ readings after the Data Hub’s quality check: test devices and sensors that fail it are left out.
Spain: sensors in total
51
MataróSpain
11Palma de MallorcaSpain
11GijónSpain
7
Cities with the most sensors
All sensors on the map, by city as the map assigns them; the city’s values count only the sensors that pass the Data Hub’s quality check.
Air quality calendar: Madrid
Daily mean PM2.5 of the city sensors, µg/m³
Click a day to see its date and value.
LowModerateElevatedHighVery highExtremely high
Widget for your site
A card with the current PM2.5 in Madrid: it is refreshed every 15 minutes and links to this page. Paste the code into your site.
Spain · City ranking · All pilot cities
Questions
What is the air quality in Madrid right now?
Right now in Madrid, PM2.5 averages 5.9 µg/m³ — “good” on the US EPA scale (approximate, from hourly readings). Mean of 4 sensors on the Atmy network, readings from 04:43–04:50 local time (02:43–02:50 UTC), summary prepared at 05:00 local time. Median: 2.1 µg/m³; range across sensors: 0.0–19.2 µg/m³.
Is it safe to be outdoors in Madrid now?
The current level is “good” (US EPA scale, approximate). Air quality is satisfactory; no restrictions are recommended. This is the standard guidance of the scale, not medical advice.
Where in Madrid is the air worse?
Highest current reading: 19.2 µg/m³ (El Cañaveral - Villas Amazonia). Lowest: 0.0 µg/m³ (Centro). The list shows every sensor, highest first.
Where do these data come from?
From Atmy sensors and connected public networks (citizen, experimental and government monitors), aggregated by Atmy. Values are approximate; see the methodology.
How often is this page updated?
The summary is rebuilt every 15 minutes from the latest reading of each sensor, each no older than one hour.
Is the air in Madrid polluted?
Over the last 156 days with data, the mean daily PM2.5 in Madrid was 20.3 µg/m³ — 4.1 times the WHO annual guideline (5 µg/m³). Over the last 30 days: 26.8 µg/m³. From Atmy's archive of daily city means.
When is the air in Madrid cleanest?
In Atmy's daily archive, the cleanest month of the last year was March 2026: 12.6 µg/m³ on average.
When is the air in Madrid most polluted?
The most polluted month of the last year was September 2026: 33.1 µg/m³ on average.
Data
Where do these data come from?
The daily value is the Data Hub’s: the mean of the city’s sensors that passed the nightly quality check, each with at least 12 valid hours, and only with sensors at four places 500 m apart; days are UTC.
“Now” uses the same sensors and rule: the mean of their latest readings, each at most 60 minutes old, shown only with sensors at four places 500 m apart reporting.
Source: public Atmy monitoring data. Methodology and data sources · Data terms