Is the air in Copenhagen safe today?

Yes. Right now the US AQI in Copenhagen is 26, which counts as good. Great air. A perfect time to be outside.

When is the best time to be outside in Copenhagen?

Fri 19:00–22:00. That is the cleanest stretch in the next 24 hours, with the US AQI averaging about 25. The worst hour is around Sat 03:00, at 33.

What is the main pollutant in Copenhagen?

Ozone (O3). It drives the index right now, at 55 µg/m³. Formed by sunlight acting on traffic and plant emissions. Highest on hot, still afternoons, often downwind of cities.

How does Copenhagen's air compare with the WHO guideline?

Within the guideline. Over the next 24 hours PM2.5 averages about 2.8 µg/m³, against the World Health Organization's 24-hour guideline of 15 µg/m³. The other pollutants stay within their guideline levels.

How many cigarettes is a day of Copenhagen's air?

About 0.1 cigarettes. Over the next 24 hours PM2.5 averages about 2.8 µg/m³. By Berkeley Earth's rule of thumb, 22 µg/m³ breathed for a day is roughly one cigarette.

Will air quality in Copenhagen improve this week?

Today looks cleanest. Its AQI peaks at 31, against 61 on Sunday, the worst day in the forecast.

Copenhagen air quality

Denmark · Live AQI and hourly forecast for the next 5 days · valid Fri 18:00 local time

Good

US AQI, mostly O₃

Model estimate. Nearby measurements are shown separately.

Great air. A perfect time to be outside.

Next 24 hours: 25–33US AQI, highest around Sat 03:00
Best time outside: Fri 19:00–22:00US AQI about 25
PM_2.5 vs WHO guideline: 0.2×2.8 µg/m³ over 24 h, guideline 15
Cigarette equivalent: ≈ 0.1 a dayBerkeley Earth rule of thumb

Loading the live globe…

The live globe, centred on Copenhagen. Switch pollutants, drag through the next 5 days or press play. Full map →

Pollutants in Copenhagen right now

Pollutant	Now	Level	Next 24 h vs WHO
Fine particles PM_2.5	3.4 µg/m³	Good	0.2×
Coarse particles PM₁₀	6.8 µg/m³	Good	0.1×
Nitrogen dioxide NO₂	5.9 µg/m³	Good	0.2×
Ozone O₃	55 µg/m³	Good	0.7×
Sulphur dioxide SO₂	0.4 µg/m³	Good	0.0×
Carbon monoxide CO	177 µg/m³	Good	0.0×
Aerosol optical depth	0.03	Whole atmosphere · dimensionless
Desert dust	0 µg/m³	Modelled surface dust
UV index	0	Low

“Next 24 h vs WHO” compares the forecast with the World Health Organization’s 2021 guideline levels: 24-hour means of 15 µg/m³ for PM_2.5, 45 for PM₁₀, 25 for NO₂, 40 for SO₂ and 4 mg/m³ for CO, and 100 µg/m³ over 8 hours for ozone. Above 1× is above the guideline. Levels follow the US AQI, which is far less strict than the WHO, so air rated Good can still be above a guideline.

Next 48 hours

Hourly US AQI. Highest 61 around Sun 04:00, lowest 25 around Fri 19:00.

Good 0–50Moderate 51–100Sensitive 101–150Unhealthy 151–200Very unhealthy 201–300Hazardous 301+

5-day air quality forecast for Copenhagen

Daily range of the hourly US AQI, from lowest to highest, on a scale of 0 to 150.

Day	US AQI	At worst	Worst hour	PM_2.5 avg	UV max
Fri 13 Nov	23–31	Good	11:00	2.3	1 Low
Sat 14 Nov	25–43	Good	23:00	3.3	1 Low
Sun 15 Nov	36–61	Moderate	4:00	8.6	1 Low
Mon 16 Nov	22–37	Good	20:00	4.8	0 Low
Tue 17 Nov	23–34	Good	4:00	3.2	0 Low

Common questions about the air in Copenhagen

Is the air in Copenhagen safe today?
Yes. Right now the US AQI in Copenhagen is 26, which counts as good. Great air. A perfect time to be outside.
When is the best time to be outside in Copenhagen?
Fri 19:00–22:00. That is the cleanest stretch in the next 24 hours, with the US AQI averaging about 25. The worst hour is around Sat 03:00, at 33.
What is the main pollutant in Copenhagen?
Ozone (O₃). It drives the index right now, at 55 µg/m³. Formed by sunlight acting on traffic and plant emissions. Highest on hot, still afternoons, often downwind of cities.
How does Copenhagen's air compare with the WHO guideline?
Within the guideline. Over the next 24 hours PM_2.5 averages about 2.8 µg/m³, against the World Health Organization's 24-hour guideline of 15 µg/m³. The other pollutants stay within their guideline levels.
How many cigarettes is a day of Copenhagen's air?
About 0.1 cigarettes. Over the next 24 hours PM_2.5 averages about 2.8 µg/m³. By Berkeley Earth's rule of thumb, 22 µg/m³ breathed for a day is roughly one cigarette.
Will air quality in Copenhagen improve this week?
Today looks cleanest. Its AQI peaks at 31, against 61 on Sunday, the worst day in the forecast.

Measured near Copenhagen

Station and measurements	Distance	US AQI	Level
Unnamed sensor OpenAQ, low-cost sensor PM_2.5: 5.9 µg/m³ · Fri 17:00 NO₂: 14 µg/m³ · Fri 17:00 CO: 260 µg/m³ · Fri 17:00	0.3 km	33	Good
"Copenhagen/1257" OpenAQ, reference monitor NO₂: 4.4 µg/m³ · Fri 17:00	2.6 km	2	Good
"Copenhagen/1259" OpenAQ, reference monitor NO₂: 3.2 µg/m³ · Fri 17:00 CO: 160 µg/m³ · Fri 17:00	2.7 km	1	Good

Air quality near Copenhagen

US AQI right now. Cleanest nearby: Stockholm (19); worst: Prague (46). The tick on each bar is Copenhagen, at 26.

Hamburg 289 km SW 31 Good
Berlin 355 km S 28 Good
Oslo 483 km N 32 Good
Stockholm 522 km NE 19 Good
Amsterdam 621 km SW 38 Good
Prague 635 km S 46 Good

All 162 cities →

About this forecast

Forecast from CAMS Europe and global via Open-Meteo: the Copernicus Atmosphere Monitoring Service (CAMS) model at about 40 km resolution (about 10 km inside Europe). Global runs update every 12 hours and European runs every 24 hours. Models smooth out street-level peaks, so busy roads and industrial sites can be worse than shown. Nearby station measurements are independent observations, not adjustments to the forecast. The point forecast uses Open-Meteo’s CAMS products, including a separate carbon monoxide product; it can differ from the globe’s global grid. The AQI rates each hour on the US EPA scale, the same way the map colors it; official daily figures average over 24 hours (8 for ozone), so they can read lower after a short peak. Readings for 55.68°N, 12.57°E, valid 2026-11-13 17:00 UTC.