Nijmegen air quality now

Netherlands · The summary is refreshed every 15 minutes.

October 22

The air is clean now

Nijmegen

12°C

Clear

15AQI

1012hPa

Atmospheric
pressure

82%

Humidity

Nijmegen, October 21, 2026: daily mean PM2.5 16 µg/m³ (36 sensors), level “Moderate” — as in the Atmy Data Hub. Now (20:00 local time): 2.7 µg/m³. Open methodology and data in JSON: Methodology and data sources · JSON

Right now in Nijmegen, PM2.5 averages 2.7 µg/m³ — “good” on the US EPA scale (approximate, from hourly readings). Mean of 35 sensors on the Atmy network, readings from 19:46–19:57 local time (17:46–17:57 UTC), summary prepared at 20:00 local time. Median: 2.7 µg/m³; range across sensors: 0.6–9.1 µg/m³.

In Nijmegen the air is good right now (approximate, US EPA scale). From 07:00 to 20:00 local time the city mean PM2.5 rose from 1.5 to 2.7 µg/m³. The highest hour was 13:00 with 14.5 µg/m³.

The weather data do not point to a clear reason for this level.

Weather now: clear, 12°C, wind 5 m/s, humidity 82%. Precipitation is expected around 05:00; it may wash particles out.

Written automatically at 20:00 local time (18:00 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.

18 km/h

Wind, SW

0.7 mm

Precipitation today

Nijmegen: air quality for the completed day

Metric: PM2.5, µg/m³ · Color scale: EPA AQI · October 21, 2026 · 00:00–24:00 UTC

16 µg/m³ Moderate

Daily mean PM2.5 on October 21, 2026 (00:00–24:00 UTC): 16 µg/m³ from 36 sensors that passed the quality check — the same value as in the Atmy Data Hub.

No. 3 of 17 cities in Netherlands and No. 41 of 297 worldwide, from the most polluted.

LowModerateElevatedHighVery highExtremely high

Nijmegen: PM2.5 by month

Metric: PM2.5, µg/m³ · Color scale: EPA AQI

Mean
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
This month
8
5
8
8
11
9
9
3
4
4
4
6
22
18

Monthly means of quality-checked sensors, as in the Data Hub trend; the current month is still incomplete, “-” means no data.

Pollution accumulation index now

13%An estimate of weather conditions · not a PM2.5 forecast

Now1313
20.0004.0011.0019.00

Pollution accumulation forecast

Today — October 22

13°/7°

Index by time of day

43/100Moderate

  1. 43/100Night
  2. 33/100Morning
  3. 6/100Day
  4. 19/100Evening

Friday — October 23

13°/9°

Index by time of day

40/100Moderate

  1. 40/100Night
  2. 22/100Morning
  3. 6/100Day
  4. 13/100Evening

Saturday — October 24

12°/9°

Index by time of day

26/100Low

  1. 26/100Night
  2. 26/100Morning
  3. 7/100Day
  4. 14/100Evening

Sunday — October 25

13°/10°

Index by time of day

30/100Low

  1. 30/100Night
  2. 26/100Morning
  3. 8/100Day
  4. 18/100Evening

Monday — October 26

13°/9°

Index by time of day

36/100Moderate

  1. 36/100Night
  2. 27/100Morning
  3. 5/100Day
  4. 14/100Evening

Tuesday — October 27

17°/12°

Index by time of day

34/100Low

  1. 34/100Night
  2. 21/100Morning
  3. 5/100Day
  4. 16/100Evening

Forecast of conditions that trap pollution near the surface

Weather

12°

Clear. Feels like 9°C

  1. MorningCloudy8°C84%
  2. DayCloudy12°C80%
  3. EveningClear10°C88%

Wind

18km/hWind from the SW

43km/hWind gusts

Wind force: 3

Gusts up to 43 km/h are expected.

10-day weather forecast for Nijmegen

Netherlands

  1. TodayOct 22Rain13°C7°C
  2. FriOct 23Rain13°C9°C
  3. SatOct 24Rain12°C9°C
  4. SunOct 25Rain13°C10°C
  5. MonOct 26Rain13°C9°C
  6. TueOct 27Rain17°C12°C
  7. WedOct 28Partly cloudy14°C9°C
  8. ThuOct 29Cloudy13°C6°C
  9. FriOct 30Partly cloudy13°C6°C
  10. SatOct 31Partly cloudy14°C7°C

Where in Nijmegen is the air worse?

See all sensors

Highest current reading: 9.1 µg/m³ (SC #26802). Lowest: 0.6 µg/m³ (SC #42346). The list shows every sensor, highest first.

  1. SC #26802 →9 µg/m³
  2. SC #89401 →5 µg/m³
  3. SC #6519 →4 µg/m³
  4. SC #62969 →4 µg/m³
  5. SC #79115 →4 µg/m³
  6. SC #88355 →4 µg/m³
  7. SC #89346 →3 µg/m³
  8. SC #94297 →3 µg/m³
  9. SC #73454 →3 µg/m³
  10. SC #62407 →3 µg/m³
+25 more sensors
  1. SC #91493 →3 µg/m³
  2. SC #49754 →3 µg/m³
  3. SC #60502 →3 µg/m³
  4. SC #96607 →3 µg/m³
  5. SC #32319 →3 µg/m³
  6. SC #61429 →3 µg/m³
  7. SC #66886 →3 µg/m³
  8. SC #4885 →3 µg/m³
  9. SC #56593 →3 µg/m³
  10. SC #84638 →2 µg/m³
  11. SC #60718 →2 µg/m³
  12. SC #25263 →2 µg/m³
  13. SC #42754 →2 µg/m³
  14. SC #38475 →2 µg/m³
  15. SC #80625 →2 µg/m³
  16. SC #94016 →2 µg/m³
  17. SC #20375 →2 µg/m³
  18. SC #47415 →1 µg/m³
  19. SC #3922 →1 µg/m³
  20. SC #92665 →1 µg/m³
  21. SC #39704 →1 µg/m³
  22. SC #6475 →1 µg/m³
  23. SC #81811 →1 µg/m³
  24. SC #42244 →1 µg/m³
  25. SC #42346 →1 µg/m³

Source: atmy.ai monitoring network

Who provides the data

Sensors in the summary by network: Sensor.Community — 35 sensors.

Atmy shows the networks’ readings after the Data Hub’s quality check: test devices and sensors that fail it are left out.

Netherlands: sensors in total

664

  1. EindhovenNetherlands

    91

  2. GroningenNetherlands

    83

  3. AmersfoortNetherlands

    77

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: Nijmegen

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 Nijmegen: it is refreshed every 15 minutes and links to this page. Paste the code into your site.

Air quality in Nijmegen now — Atmy

Netherlands · City ranking · All pilot cities

Questions

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

Daily mean PM2.5 on October 21, 2026 (00:00–24:00 UTC): 16 µg/m³ from 36 sensors that passed the quality check — the same value as in the Atmy Data Hub. No. 3 of 17 cities in Netherlands and No. 41 of 297 worldwide, from the most polluted.

What is the air quality in Nijmegen right now?

Right now in Nijmegen, PM2.5 averages 2.7 µg/m³ — “good” on the US EPA scale (approximate, from hourly readings). Mean of 35 sensors on the Atmy network, readings from 19:46–19:57 local time (17:46–17:57 UTC), summary prepared at 20:00 local time. Median: 2.7 µg/m³; range across sensors: 0.6–9.1 µg/m³.

Is it safe to be outdoors in Nijmegen 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 Nijmegen is the air worse?

Highest current reading: 9.1 µg/m³ (SC #26802). Lowest: 0.6 µg/m³ (SC #42346). 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 Nijmegen polluted?

Over the last 365 days with data, the mean daily PM2.5 in Nijmegen was 7.0 µg/m³ — 1.4 times the WHO annual guideline (5 µg/m³). Over the last 30 days: 11.7 µg/m³. From Atmy's archive of daily city means.

When is the air in Nijmegen cleanest?

In Atmy's daily archive, the cleanest month of the last year was April 2026: 3.3 µg/m³ on average.

When is the air in Nijmegen most polluted?

The most polluted month of the last year was January 2026: 10.9 µg/m³ on average.

Is the air in Nijmegen worse in the heating season?

From November to March the mean daily PM2.5 was 9.0 µg/m³, from June to August 4.8 µg/m³ (last 365 days).

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