Current pollutants
Source values shown in their API-reported units
Live air quality
Air quality anywhere
Search for any city, town, or place to load its current modeled air quality and analytics.
Bengaluru, India
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Explore conditions
Environmental maps
Pollution and fire data for Bengaluru, India; worldwide wind and temperature with the selected place highlighted.
Pollution map
Good 0–50
Moderate 51–100
Unhealthy for sensitive groups 101–150
Unhealthy 151–200
Very unhealthy 201–300
Hazardous 301+
Dots: Open‑Meteo/CAMS model estimates · Star: Your Filter · WAQI points: stations
Wind map
Wind speed · km/h
015304560+
➜Flow direction
Fixed 0–60+ km/h colour scale · Open‑Meteo hourly forecast · arrows show modeled flow
Temperature map
Temperature · °C
−200204050+
Worldwide coloured temperature map
Fixed −20 to 50+ °C scale · Open‑Meteo hourly forecast · 2 m · interpolated estimate
Fixed −20 to 50+ °C scale · Open‑Meteo hourly forecast · 2 m · interpolated estimate
Fire and hotspot map
Satellite detections
NASA FIRMS hotspot
Searched place
NASA FIRMS VIIRS NOAA‑20 NRT · detections may include controlled burns
Pollution Sources map
Community-reported pollution evidence. Each marker comes from a submitted pollution report and remains an unverified community observation. NASA FIRMS heat detections are shown only on the separate Fire Hotspots map.
Reported pollution
📍 Community pollution report
Searched place
Pan or zoom to view submitted reports · click a marker for evidence details
Scientific workspace
Analytics and historical trends
Choose a worldwide sampled overview or analyze one searched place.
Current AQI
US AQI · health communication index
AQI pollutant sub-indices
Shows which available pollutant is driving the index
Particle time series
PM2.5 and PM10 · µg/m³
Gas time series
CO, NO₂, SO₂ and HCHO · µg/m³
Atmospheric context
Dust, methane and aerosol optical depth when available
Weather context
Temperature, humidity and wind speed at the selected location
Current particle balance
PM2.5 and PM10 · µg/m³
Summary statistics
Minimum, mean, maximum and latest value for the selected analysis window.
| Variable | Unit | Samples | Minimum | Mean | Maximum | Latest |
|---|
Sensor and monitor availability
Measured values use OpenAQ reference monitors when configured and available. PM1 can also use the nearest recent outdoor PurpleAir community sensor or your manually saved filter sensor reading.
Last 30 days
Historical trends for this place
Open Analytics to load historical data…
Daily PM2.5 and PM10
Modeled daily mean · µg/m³
Seven-day PM2.5 average
Rolling mean · µg/m³
Daily PM2.5 range
Minimum and maximum · µg/m³
1–30 years
Long-term historical trends
Explore reliable climate history for the searched place.
Choose 1–30 years. The chart uses ERA5 reanalysis weather data; it does not invent unavailable long-term pollution measurements.
Temperature and humidity history
Mean values · monthly for up to 5 years, yearly for longer periods
Historical precipitation
Total rainfall · millimetres
Historical wind speed
Mean 10 m wind speed · km/h
Year-by-year historical summary
| Year | Mean temperature | Mean humidity | Total precipitation | Mean wind | Days |
|---|---|---|---|---|---|
| Load a historical period to see the summary. | |||||
This is an equal-weight snapshot of eight fixed cities across inhabited regions. It is not a worldwide population-weighted average. Every number comes from Open‑Meteo/CAMS model responses.
Choose Global to load the latest worldwide sample…
Current sampled pollutant means
Equal-weight mean across responding sample cities
Current PM2.5 by sample city
Open‑Meteo/CAMS model estimate · µg/m³
Global sample historical trend
30-day daily mean across responding sample cities · µg/m³
Current sample table
| City | AQI | PM2.5 | PM10 | NO₂ | SO₂ | Temperature |
|---|
Student test bench
Your Filter
Record readings before air enters the filter and after it exits the filter.
Enter readings from your own filter tests only. Auto Fill prefers compatible measurements from the nearest OpenAQ reference monitor, then uses Open‑Meteo/CAMS model data for remaining fields and PurpleAir for PM1 when needed. It never predicts after-filter values.
Ready to load available before-filter values for the selected location.
PM2.5 reduction · calculated only from values entered or loaded above
Before vs after filtration
Public before-filter values or your test readings compared with your manually entered after-filter readings
Project PureVayu
View Our Team
Meet the student environmental team building PureVayu and follow our work.
Our mission
Cleaner air for every classroom
Our mission is to make the classrooms we study in healthier. Air pollution is invisible, but its effects on students are not — so we build low-cost classroom air filters, create awareness through social media, and take our own teaching lessons into schools to spread what we've learned. Cleaner air for every classroom, starting with our own.
Our vision
TO MAKE THE WORLD SMILE
Our work in action
Fieldwork gallery
Photos from our air-quality observations and conversations with the community.
Dust and classroom air
Evidence of the dust we observe in and around learning spaces.
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Community Hall Filter Installation
We installed a Project PureVayu air filter in a community hall, bringing cleaner air to a shared neighbourhood space.
Conversations with Doctors
At Avantis Superspeciality Clinic, we interviewed Dr Anoop Kulkarni, psychiatrist, and Dr Divya Ragate, endocrinologist, to learn how air quality affects health.
Consultant psychiatrist interview
A medical perspective from our conversation with a consultant psychiatrist.
Community interviews
Our team listening, learning and spreading awareness.
Community interview videos
Recorded voices from our outreach and awareness work.
Our team
See Project PureVayu students taking our clean-air mission into the community.
Our gallery
Research, prototyping, fieldwork, interviews and awareness in action.
Contact us
Questions, collaborations or school outreach? Email Project PureVayu.
PhoneComing shortly
Community action
Report Air Pollution
Document visible pollution anywhere in the world. Reports are anonymous, public and marked as community-submitted until verified.
Photograph the pollution source—not people. Avoid faces, vehicle number plates, home addresses and other private information. Do not put yourself in danger to collect evidence.
Submitted community reports. Browse the newest reports as a list with their evidence photo, area, submission time, reported reason and requested action. These anonymous reports are not verified measurements or official findings.
Loading submitted reports…
