Caen air quality now

France · The summary is refreshed every 15 minutes.

Now

No current value: fewer than four sensors at different places are reporting now.

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Caen, November 10, 2026: daily mean PM2.5 10 µg/m³ (4 sensors), level “Moderate” — as in the Atmy Data Hub. Open methodology and data in JSON: Methodology and data sources · JSON

There are not enough fresh measurements for Caen right now. From 10:00 to 21:00 local time the city mean PM2.5 rose from 5.0 to 7.5 µg/m³.

Light wind (2 m/s) in the evening or at night, as the air cools, possibly traps particles near the ground (a temperature inversion). High humidity (96%) possibly makes optical sensors read somewhat higher.

Weather now: cloudy, 12°C, wind 2 m/s, humidity 96%. By 07:00 the wind is expected to pick up to 4 m/s, which may clear the air.

Written automatically at 22:09 local time (21:09 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.

2 m/s

Wind, NNE

0.1 mm

Precipitation today

Caen: air quality for the completed day

Metric: PM2.5, µg/m³ · Color scale: EPA AQI · November 10, 2026 · 00:00–24:00 UTC = 01:00–01:00 UTC+1

10 µg/m³ Moderate

Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 01:00–01:00 UTC+1): 10 µg/m³ from 4 sensors that passed the quality check — the same value as in the Atmy Data Hub.

No. 17 of 32 cities in France and No. 534 of 676 worldwide, from the most polluted.

LowModerateElevatedHighVery highExtremely high

Pollution accumulation index now

23/100Low · An estimate of weather conditions · not a PM2.5 forecast

Now2319
23.0007.0014.0022.00

Pollution accumulation forecast

Today — November 11

17°/12°

Index by time of day

54/100Moderate

  1. 54/100Night
  2. 34/100Morning
  3. 8/100Day
  4. 24/100Evening

Thursday — November 12

12°/9°

Index by time of day

36/100Moderate

  1. 36/100Night
  2. 30/100Morning
  3. 6/100Day
  4. 22/100Evening

Friday — November 13

11°/3°

Index by time of day

40/100Moderate

  1. 40/100Night
  2. 40/100Morning
  3. 9/100Day
  4. 29/100Evening

Saturday — November 14

10°/0°

Index by time of day

60/100Moderate

  1. 60/100Night
  2. 46/100Morning
  3. 8/100Day
  4. 26/100Evening

Sunday — November 15

14°/1°

Index by time of day

58/100Moderate

  1. 58/100Night
  2. 37/100Morning
  3. 6/100Day
  4. 14/100Evening

Monday — November 16

13°/7°

Index by time of day

43/100Moderate

  1. 43/100Night
  2. 35/100Morning
  3. 6/100Day
  4. 17/100Evening

Forecast of conditions that trap pollution near the surface

Weather

12°

Cloudy. Feels like 12°C

  1. MorningCloudy13°C93%
  2. DayCloudy16°C76%
  3. EveningPartly cloudy13°C97%

Wind

2m/sWind from the NNE

4m/sWind gusts

Wind force: 2

Gusts up to 6 m/s are expected.

10-day weather forecast for Caen

France

  1. TodayNov 11Rain17°C12°C
  2. ThuNov 12Rain12°C9°C
  3. FriNov 13Cloudy11°C3°C
  4. SatNov 14Partly cloudy10°C0°C
  5. SunNov 15Rain14°C1°C
  6. MonNov 16Rain13°C7°C
  7. TueNov 17Rain17°C11°C
  8. WedNov 18Cloudy13°C10°C
  9. ThuNov 19Rain12°C7°C
  10. FriNov 20Rain10°C6°C

France: sensors in total

207

  1. RennesFrance

    20

  2. ToulouseFrance

    18

  3. VilleurbanneFrance

    16

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: Caen

Daily mean PM2.5 of the city sensors, µg/m³

Click a day to see its date and value.

LowModerateElevatedHighVery highExtremely high

France · City ranking · All pilot cities

Questions

What was the air quality in Caen over the last completed day?

Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 01:00–01:00 UTC+1): 10 µg/m³ from 4 sensors that passed the quality check — the same value as in the Atmy Data Hub. No. 17 of 32 cities in France and No. 534 of 676 worldwide, from the most polluted.

What is the air quality in Caen right now?

Fresh data for Caen are insufficient (last update: 21:45 local time, 20:45 UTC). Open the map for the latest readings of individual sensors.

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.

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