Kathmandu Air Pollution: AQI, Masks and Travel Planning

Quick answer: Check Kathmandu’s live air quality by location before a long walk or strenuous outdoor activity. Kathmandu Metropolitan City now publishes readings from multiple monitoring points, and conditions can differ substantially across the city. When pollution is elevated, change the time, route or intensity of the activity; take indoor breaks; and follow health advice appropriate to you.

Do not save one AQI screenshot and use it for the whole trip. Air quality changes with traffic, weather, wind, local dust and time of day. This guide offers general exposure-reduction steps, not diagnosis or individual medical advice.

Where to check Kathmandu air quality

Start with the Kathmandu Metropolitan City air-quality dashboard. The city says its network reports real-time information from 18 locations and provides AQI categories and health cautions. Nepal’s national air-quality monitoring portal is a second official reference.

Check the timestamp, monitoring location and whether a station is reporting data. A dash, blank value or old timestamp is not proof that the air is clean.

Why two apps can show different numbers

Air-quality services may use different stations, update times, pollutants, averaging periods or AQI scales. Compare the label and source, not only the number. For a same-day Kathmandu decision, prefer a recent nearby official station and read the category guidance shown with it.

Understand the city dashboard’s AQI categories

Kathmandu Metropolitan City currently displays these categories:

• 0–50, Good: little or no stated pollution risk.
• 51–100, Moderate: generally acceptable, but sensitive people may be affected.
• 101–150, Unhealthy for sensitive groups: children, older people and people with lung or heart disease need greater caution.
• 151–200, Unhealthy: health effects may begin for everyone, with greater risk for sensitive groups.
• 201–300, Very unhealthy: the dashboard describes a serious warning for everyone.
• 301–500, Hazardous: emergency conditions with serious effects possible.

These categories belong to the city dashboard’s displayed scale. Do not transfer a number blindly to a service using a different national or proprietary AQI calculation.

Severe alerts: When the local dashboard warns of very unhealthy or hazardous conditions, postpone optional outdoor activities and follow its current precautions. A mask does not make prolonged sightseeing safe. The dashboard retrieved for this review displayed a 31 October timestamp; do not treat that as a verified 1 November reading.

A practical morning decision routine

1. Check your location. Use the nearest reporting point, not a citywide headline.
2. Check the timestamp. Look again if the data is old or the station is offline.
3. Check your plan. A short taxi transfer is different from climbing steps, cycling or walking for hours.
4. Check your health needs. Follow a clinician’s plan if you have asthma, heart or lung disease, are pregnant, are older, or travel with a child.
5. Choose a backup. Move a museum, café or indoor activity into the poor-air period and reschedule the longer walk.
6. Recheck later. Conditions may improve or worsen during the day.

Reduce exposure without cancelling every activity

Change the location

Pollution can be higher beside congested roads, bus terminals, construction and visible dust. Choose quieter parallel streets, courtyards or pedestrian areas where practical. A route that is slightly longer but away from traffic may reduce direct roadside exposure.

Change the timing

Use the live dashboard rather than assuming that every morning or evening is cleaner. If the chosen station improves, shift the long outdoor activity to that period. Avoid building a tight itinerary around a mountain view that haze may obscure.

Change the intensity

Hard exercise increases breathing. The World Health Organization notes that changing the timing, location and type of activity can change pollution exposure. On a high-pollution day, replace a fast uphill walk with a shorter, slower visit and take indoor breaks.

Reduce time beside idling traffic

Wait inside a cleaner lobby rather than directly beside a bus or taxi queue when possible. Ask the driver not to idle unnecessarily and keep vehicle windows closed through a visibly smoky or dusty section if the ventilation system allows.

Do masks help with Kathmandu pollution?

A respirator is not a complete solution, but a properly selected and fitted particulate respirator can reduce inhalation of fine particles. N95, KN95 and FFP2 are particulate-respirator classifications; check genuine certification, the applicable standard and a close fit rather than assuming every product offers identical protection.

What to look for

• A recognized certification or approval shown on the product and packaging.
• A model and size that seal closely around the nose, cheeks and chin.
• No obvious gaps during normal breathing.
• Instructions for use, storage and replacement.
• A reliable seller rather than an unsupported “pollution mask” claim.

Facial hair crossing the seal can reduce fit. A loose surgical or cloth mask is not equivalent to a fitted particulate respirator. No particle respirator removes every gas, odour or pollutant.

When to replace it

Follow the manufacturer’s instructions. Replace a disposable respirator if it becomes damaged, dirty, wet, difficult to breathe through or no longer seals. Do not wash a model unless the manufacturer specifically permits it.

WHO cautions that evidence of health benefits from respirator use by the general public in real-world air pollution remains limited and does not recommend blanket public use as a health measure. Reducing emissions and everyday exposure takes priority. People with heart or breathing conditions should ask a clinician whether a respirator is appropriate. It is not permission to ignore a severe alert.

Choose accommodation with indoor air in mind

Ask the hotel:

• Whether the room faces a major road, generator, kitchen exhaust or construction.
• Whether windows seal and the room has effective ventilation or filtration.
• Whether smoking is prohibited in the room and corridor.
• Whether a portable cleaner uses a suitable particle filter and when it was maintained.
• Whether incense, open fires or strong indoor smoke are common in shared spaces.

Staying indoors is not automatically protective. WHO notes that cooking, tobacco smoke, incense and outdoor infiltration can create indoor pollution. A cleaner indoor space matters more than simply closing a door.

Extra planning for sensitive travellers

Current Australian government travel advice highlights seasonal Kathmandu smog and advises people with breathing difficulties to obtain medical advice. Before travel, discuss an action plan with a qualified clinician if pollution has previously triggered symptoms.

Carry prescribed medicine in hand luggage, keep a copy of prescriptions and know where to seek care. Do not start, stop or change medicine based on a general blog post.

When to seek medical help

Move away from the exposure and seek medical advice if symptoms are significant or persistent. Urgent symptoms can include severe shortness of breath, chest pain, fainting, confusion, blue lips or a serious asthma attack. Use local emergency services or go to an appropriate medical facility.

Mild eye or throat irritation can have several causes. Do not assume pollution is the only explanation when symptoms continue, worsen or include fever.

Common mistakes

Checking only a citywide average

A nearby station can be more useful than an average that hides neighbourhood differences.

Believing a clear mountain view proves clean air

Visibility and pollution are related in some conditions but are not the same measurement. Use monitored data.

Buying a mask only because it says “N95”

The label can be copied onto untested products. Check certification, seller and fit.

Exercising hard because the trip is short

A short visit does not eliminate short-term exposure. Modify intense outdoor activity when the current category and personal health call for caution.

Creating pollution while trying to avoid it

Choose shared transport or walking on cleaner routes when appropriate, avoid unnecessary vehicle idling and do not burn waste. Visitor decisions are small compared with system-wide controls, but they should not add avoidable emissions.

Frequently asked questions

What is Kathmandu’s AQI today?

Use the live city dashboard. This article intentionally does not reproduce a number because readings change by place and time.

What is the best mask for Kathmandu air pollution?

There is no universal best fit. Look for a genuine certified particulate respirator such as an approved N95, KN95 or FFP2 model that seals to your face, and follow its instructions. People with respiratory or cardiovascular conditions should seek medical advice about respirator use.

Should I cancel a Kathmandu trip because of pollution?

A single forecast cannot answer for every traveller. Review current official data, trip activities and personal health with an appropriate professional. Flexible timing, route changes and cleaner indoor breaks may reduce exposure, while severe or persistent conditions may justify changing plans.

Is air quality the same across Kathmandu Valley?

No. The city dashboard itself shows location-by-location readings. Weather, traffic and local sources can create differences.

Air-quality travel checklist

• Bookmark the city and national monitoring pages.
• Check station, timestamp, category and health note.
• Move strenuous outdoor plans when the reading is poor.
• Use quieter routes and limit time beside idling traffic.
• Verify respirator certification and fit.
• Choose accommodation with a cleaner indoor environment.
• Carry prescribed medicines and an individual action plan.
• Seek medical help for serious or persistent symptoms.

For broader trip preparation, continue with the complete Nepal travel guide.

This general travel-health information was prepared from sources available on 1 November 2026. Live readings and health guidance change. It does not replace individual medical advice.