Worst air pollution Malden, today and tomorrow
Today (16 July): Air quality in Malden is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (O3: 36.3/100).
Tomorrow (17 July 2026): Air quality in Malden is fair. All pollutants stay as today. Pollution peaks around 1:00 PM (O3: 38.8/100). 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
Use our Strava plugin to check your own exposure.
Malden's air quality reflects the Greater Boston metropolitan area's dense inner northern suburb, with vehicle emissions from I-93 and the Fellsway and surrounding mixed residential and commercial character contributing local sources. The Middlesex Fells Reservation provides a modest clean-air buffer, while the broader Boston metropolitan regional ozone burden on prevailing southwesterlies elevates background pollution throughout the year.
Today - 16 July | Pollution peaks at 13:00
AQI:
Fair
36.3/100
PM2.5 (fine particles):
Good
10.8/100
PM10 (coarse particles):
Good
8.6/100
NO2 (nitrogen dioxide):
Good
2.4/100
O3 (ozone):
Fair
36.3/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.1/100
PM1 (ultrafine particles):
Good
4.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
38.8/100
PM2.5 (fine particles):
Good
8.9/100
PM10 (coarse particles):
Good
7.2/100
NO2 (nitrogen dioxide):
Good
2.8/100
O3 (ozone):
Fair
38.8/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.0/100
PM1 (ultrafine particles):
Good
5.3/100
Pollen forecast in Malden
View pollen forecastFrequently Asked Questions
Is air quality bad in Malden right now?
On 16 July 2026, overall air quality in Malden is fair. AQI is the main air quality indicator at 36.3/100. Pollution peaks around 1:00 PM (O3: 36.3/100).
Will air quality be worse tomorrow in Malden?
On 17 July 2026, air quality conditions in Malden will be similar to today, with AQI forecast at fair at 38.8/100. Pollution peaks around 1:00 PM (O3: 38.8/100).
When is air pollution at its worst in Malden?
Seasonal changes shape air quality across Malden. Typically, spring and autumn generally bring the cleanest air, helped by more active weather patterns, while hot, humid summer days bring the highest ozone risk, often worsened by pollution transported in from other regions. Winter cold fronts tend to clear the air quickly, so extended pollution episodes are relatively uncommon.
Are air quality levels in Malden 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.
Want to see air quality forecasts for other cities in United States?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (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