Worst air pollution Baltimore, today and tomorrow
Today (16 July): Air quality in Baltimore is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (O3: 35.2/100).
Tomorrow (17 July 2026): Air quality in Baltimore is fair. PM2.5 increases to fair; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 39.5/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Baltimore's air quality reflects its position in the mid-Atlantic industrial corridor, with the inner harbour refineries and chemical plants contributing elevated PM2.5 alongside heavy traffic on the I-695 beltway. The Chesapeake Bay provides some maritime ventilation, though summer heat and regional ozone from the broader Washington-Baltimore airshed remain persistent concerns.
Today - 16 July | Pollution peaks at 13:00
AQI:
Fair
35.2/100
PM2.5 (fine particles):
Good
17.1/100
PM10 (coarse particles):
Good
11.4/100
NO2 (nitrogen dioxide):
Fair
27.0/100
O3 (ozone):
Fair
35.2/100
SO2 (sulfur dioxide):
Good
4.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Good
11.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Fair
39.5/100
PM2.5 (fine particles):
Fair
21.0/100
PM10 (coarse particles):
Good
13.5/100
NO2 (nitrogen dioxide):
Fair
26.2/100
O3 (ozone):
Fair
39.5/100
SO2 (sulfur dioxide):
Good
4.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.6/100
PM1 (ultrafine particles):
Good
13.6/100
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Frequently Asked Questions
Is air quality bad in Baltimore right now?
On 16 July 2026, overall air quality in Baltimore is fair. AQI is the main air quality indicator at 35.2/100. Pollution peaks around 1:00 PM (O3: 35.2/100).
Will air quality be worse tomorrow in Baltimore?
On 17 July 2026, air quality conditions in Baltimore will be similar to today, with AQI forecast at fair at 39.5/100. Pollution peaks around 12:00 PM (O3: 39.5/100).
When is air pollution at its worst in Baltimore?
Seasonal changes shape air quality across Baltimore, as winter generally brings the cleanest air, once the summer ozone season has passed; by contrast, the hottest, most humid summer weeks bring the year's highest ozone readings. Suburban and rural areas generally see less of the persistent traffic-driven pollution that affects the urban core.
Are air quality levels in Baltimore 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: 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