Highest air pollution Boston, today and tomorrow
Today (27 June): Air quality in Boston is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (O3: 37.7/100).
Tomorrow (28 June 2026): Air quality in Boston is fair. All pollutants stay as today. Pollution peaks around 8:00 AM (O3: 35.7/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Boston's air quality reflects the northeastern US regional pollution burden, with vehicle emissions from the dense highway network combining with upwind sources to elevate summer ozone across the metro area. The harbour and Charles River corridors provide natural ventilation, while the Blue Hills and coastal sea breezes improve conditions on many days.
Today - 27 June | Pollution peaks at 10:00
AQI:
Fair
37.7/100
PM2.5 (fine particles):
Good
4.4/100
PM10 (coarse particles):
Good
2.4/100
NO2 (nitrogen dioxide):
Good
4.2/100
O3 (ozone):
Fair
37.7/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.8/100
PM1 (ultrafine particles):
Good
3.4/100
Levels show the poorest local air quality during the day
Tomorrow - 28 June | Pollution peaks at 08:00
AQI:
Fair
35.7/100
PM2.5 (fine particles):
Good
5.3/100
PM10 (coarse particles):
Good
3.5/100
NO2 (nitrogen dioxide):
Good
4.7/100
O3 (ozone):
Fair
35.7/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.5/100
PM1 (ultrafine particles):
Good
3.8/100
Pollen forecast in Boston
View pollen forecastFrequently Asked Questions
Is air quality bad in Boston right now?
On 27 June 2026, overall air quality in Boston is fair. AQI is the main air quality indicator at 37.7/100. Pollution peaks around 10:00 AM (O3: 37.7/100).
Will air quality be worse tomorrow in Boston?
On 28 June 2026, air quality conditions in Boston will be similar to today, with AQI forecast at fair at 35.7/100. Pollution peaks around 8:00 AM (O3: 35.7/100).
Are air quality levels in Boston based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 27 June 2026 at 18:36 CET (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team