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Air Quality Index (AQI) in Delft, Netherlands ๐Ÿ‡ณ๐Ÿ‡ฑ

Air quality in Delft is currently 57 on the US AQI scale, rated Moderate.

Clear
25ยฐC
Clear
AQI INDEX
57
US EPA Standard

PM 2.5 Level
12.5
ยตg/mยณ

Air Quality
Moderate
The current Air Quality Index (AQI) in Delft is recorded at 57 as of 9:30โ€ฏPM local time this Wednesday, July 29, 2026. This real-time AQI score is estimated from the current PM2.5 concentration. According to the US EPA health standard, air quality in Delft currently falls into the Moderate category. The PM2.5 pollution levels are currently measured at 12.5 ยตg/mยณ. While this AQI level is acceptable for most people, those who are unusually sensitive to air pollution should consider reducing prolonged or heavy exertion outdoors. If you are sensitive to air pollution, check the local weather before heading out. For the AQI across entire Netherlands, you can also view the Air Quality Index for Netherlands covering other major urban centers and local monitoring stations.

Health Recommendations for Delft Residents

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Air quality is acceptable. However, for some pollutants there may be a moderate health concern for a very small number of people. Sensitive groups should consider reducing prolonged outdoor exertion.

Delft Air Pollution: Detailed Pollutant Breakdown

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Good news โ€” Delft's air today is cleaner than a single cigarette (about 0.6).
Based on the Berkeley Earth estimate that ~22 ยตg/mยณ of PM2.5 over a day is about one cigarette. Today's PM2.5 in Delft is 12.5 ยตg/mยณ.
PM 2.5
12.5
ยตg/mยณ
PM 10
18.5
ยตg/mยณ
Nitrogen Dioxide (NO2)
35.0
ยตg/mยณ
Ozone (O3)
74.0
ยตg/mยณ
Carbon Monoxide (CO)
250.0
ยตg/mยณ
Sulfur Dioxide (SO2)
2.1
ยตg/mยณ

Current Weather in Delft

๐ŸŒก๏ธ 25ยฐC (Feels like 19ยฐ)
๐ŸŒฌ๏ธ 6 km/h ESE
๐Ÿ’ง 48% Humidity
๐Ÿงญ 1013 hPa
๐Ÿ‘๏ธ 10.0 km Visibility
โ˜€๏ธ UV Index: 0.0
๐ŸŒ… Sunrise: 06:00 AM
๐ŸŒ‡ Sunset: 09:38 PM
๐ŸŒก๏ธ Dew Point: 13ยฐC

Delft's Main Air Pollutant Today

The main concern in Delft right now is NO2 at 35.0 ยตg/mยณ, about 1.4x the WHO 24-hour guideline.

Air Quality Health Advice for Delft

General publicAir quality is acceptable for most people. Outdoor activity is fine.
Sensitive groupsUnusually sensitive people should consider easing prolonged or heavy exertion outdoors.

Air Quality in Other Cities in Netherlands

Browse Air Quality in Netherlands by cities in alphabetical order:

A B C D E G H I K L M N O P R S T U V W Y Z

Air Quality in Netherlands ›

Frequently Asked Questions about Air Quality in Delft

What is the air quality (AQI) in Delft right now?

The current air quality index in Delft is 57 โ€” categorised as Moderate.

Is the air in Delft safe to breathe today?

Today's air quality in Delft is rated Moderate on the US EPA scale.

What is the PM2.5 level in Delft right now?

The fine-particle (PM2.5) concentration in Delft is currently 12.5 ยตg/mยณ. PM2.5 is the most health-relevant pollutant โ€” the WHO 24-hour guideline is 15 ยตg/mยณ.

What is the PM10 level in Delft right now?

The coarse-particle (PM10) concentration in Delft is currently 18.5 ยตg/mยณ.

What is the main pollutant in Delft right now?

The dominant pollutant in Delft right now is NO2 at 35.0 ยตg/mยณ.

Is it safe to exercise outdoors in Delft today?

With air quality currently rated Moderate, outdoor exercise in Delft is generally considered safe for most people.

How to Read the Air Quality Index for Delft

Good (0-50)

Air is fresh and healthy. Safe for all outdoor activities.

Moderate (51-100)

Acceptable air quality, though sensitive groups should monitor comfort.

Unhealthy (Sensitive) (101-150)

Vulnerable groups (children, elderly) should limit outdoor exertion.

Unhealthy (151-200)

Everyone begins to experience health effects. Stay indoors where possible.

Very Unhealthy (201-300)

Significant health impact for entire population. Emergency conditions.

Hazardous (301+)

Serious health alert: everyone may experience serious life-threatening effects.

Good (0-12)

Fine particles are at minimal, safe levels. Air is optimal.

Moderate (12-35)

Acceptable air, but haze may be present in urban areas.

Sensitive (35-55)

Individuals with heart or lung disease should limit activity.

Unhealthy (55-150)

Particulate levels high enough to cause respiratory irritation.

Very Unhealthy (150-250)

Heavy haze. High risk to cardiovascular health for the public.

Hazardous (250+)

Lethal particulate concentrations. Critical neurological and lung risk.

Good (0-54)

Low levels of dust and coarse particles. Environment is safe.

Moderate (55-154)

Coarse particles may trigger coughing in sensitive groups.

Sensitive (155-254)

Visible dust pollution. Sensitive groups should avoid heavy labor.

Unhealthy (255-354)

Widespread respiratory impacts likely for the population.

Very Unhealthy (355-424)

Dangerous dust and debris levels. Significant warnings issued.

Hazardous (425+)

Extremely high concentrations. Stay inside with filtration.

Good (0-54)

Surface ozone levels are within a safe, natural range.

Moderate (55-70)

Acceptable air, but sensitive individuals may feel chest tightness.

Sensitive (71-85)

Rising ozone can trigger airway inflammation in active children.

Unhealthy (86-105)

Avoid heavy outdoor work during the hottest part of the day.

Very Unhealthy (106-200)

Serious lung function reduction likely across the public.

Hazardous (201+)

Emergency ozone levels. Risk of permanent lung tissue damage.

Good (0-53)

Nitrogen levels are optimal. Safe for everyone.

Moderate (54-100)

Typical background levels for high-density urban areas.

Sensitive (101-360)

Increased risk of respiratory infections for vulnerable groups.

Unhealthy (361-649)

Significant airway inflammation likely near traffic zones.

Very Unhealthy (650-1249)

Acute respiratory distress potential. High-risk groups stay indoors.

Hazardous (1250+)

Toxic concentrations. Immediate health precautions required.

Good (0-4.4)

Carbon Monoxide levels are clean and non-toxic.

Moderate (4.5-9.4)

Acceptable; may affect those with specific heart conditions.

Sensitive (9.5-12.4)

Reduced oxygen delivery to the heart may occur.

Unhealthy (12.5-15.4)

Headaches and fatigue may occur in urban canyons.

Very Unhealthy (15.5-30.4)

Significant cardiovascular distress. Mental confusion possible.

Hazardous (30.5+)

Lethal potential. Immediate risk of neurological collapse.

Good (0-35)

Optimal air quality with no sulfur detection.

Moderate (36-75)

Acceptable air; minor odors possible near industry.

Sensitive (76-185)

Bronchoconstriction possible for active asthmatics.

Unhealthy (186-304)

Respiratory distress likely for the wider population.

Very Unhealthy (305-604)

Significant wheezing and shortness of breath likely.

Hazardous (605+)

Extreme respiratory danger. Significant life risk.

Health & Scientific Resources

→ How to read US EPA Air Quality Index before going outside → Understanding Air Quality Index levels and what they mean → When haze forms and what it does to air quality

How is this AQI calculated?

The primary Air Quality Index (AQI) shown above is calculated using the US EPA Linear Interpolation formula based on PM2.5 concentration (Fine Particulate Matter).

Formula: Ip = [(Ihi - Ilow) / (Chi - Clow)] * (Cp - Clow) + Ilow
Current Conditions Explained

Is the AQI in Delft safe today?

Today's AQI is 57, which is categorized as Moderate. This means the air quality is moderate for the general population.