What Did You Breathe Today?
The air you breathe changes throughout the day. Walking to work, sitting in traffic, staying at home — each environment exposes you to different levels of PM2.5. This tool gives you a rough picture of your daily intake.
Your day
Check the Live Map or enter manually
— µg/m³
Walking, exercising, waiting for bus
Driving, bus, taxi
Office, classroom, shop
Sleeping, cooking, resting
Total: 24 / 24 Must add up to 24 hours
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Breathing this air today was like smoking
— cigarettes
Berkeley Earth methodology: 22 µg/m³ daily avg = 1 cigarette/day
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PM2.5 inhaled today
—
avg exposure µg/m³
—
× the WHO guideline
Where it came from
Outdoors—
In traffic—
Work/school—
At home—
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What you can do
- → On high-pollution days, reduce time outdoors — especially strenuous exercise.
- → In traffic, keep car windows closed and use recirculation mode.
- → At home, an air purifier with a HEPA filter can reduce indoor PM2.5 by 50–80%.
- → Check the air quality before planning outdoor activities.
Estimates based on average breathing rates and indoor/outdoor PM2.5 ratios from WHO and EPA research. Individual exposure varies.
Enter how you spent the last 24 hours and the outdoor PM2.5 level in your area.
WHO recommends daily average PM2.5 below 15 µg/m³.