Ottawa Downtown: current Air Quality Health Index (AQHI)

Calculated at 12:00 am EDT Wednesday, July 16, 2025

4

1

2

3

4

5

6

7

8

9

10

+

low risk
(1 - 3)

moderate risk
(4 - 6)

high risk
(7 - 10)

very high risk

Forecast for Ottawa Downtown

• Forecast Air Quality Health Index maximums for Ottawa Downtown
• Issued at: 5:00 pm EDT July 15, 2025

Forecast Air Quality Health Index maximums for Ottawa Downtown

Period	Forecast maximum (Issued at 5:00 pm EDT July 15, 2025)
Tuesday night	5 - Moderate Risk
Wednesday	4 - Moderate Risk

Health message for Ottawa Downtown

• Current Air Quality Health Index: 4
• Calculated at 12:00 am EDT Wednesday, July 16, 2025
• Risk: Moderate

At-risk population:

• Consider reducing or rescheduling strenuous activities outdoors if you are experiencing symptoms.
• Find out if you are at risk

General population:

• No need to modify your usual outdoor activities unless you experience symptoms such as coughing and throat irritation.

See the Ontario Ministry of the Environment, Conservation and Parks air quality health messages.

Note: AQHI readings on this web page are based on automatically polled data and have not undergone final verification.