St. Catharines: Current Air Quality Health Index
Calculated at 9:00 pm EDT Sunday, March 30, 2025
2
1
2
3
4
5
6
7
8
9
10
+
Low Risk
(1 - 3)
(1 - 3)
Moderate Risk
(4 - 6)
(4 - 6)
High Risk
(7 - 10)
(7 - 10)
Very High Risk
Forecast for St. Catharines
- Forecast Air Quality Health Index maximums for St. Catharines
- Issued at: 5:00 pm EDT March 30, 2025
| Period | Forecast Maximum (Issued at 5:00 pm EDT March 30, 2025) | |
|---|---|---|
| Sunday Night | 2 - Low Risk |  |
| Monday | 2 - Low Risk | |
Health Message for St. Catharines
- Current Air Quality Health Index: 2
- Calculated at 9:00 pm EDT Sunday, March 30, 2025
- Risk: Low
At-Risk Population:
- Enjoy your usual outdoor activities.
- Find out if you are at risk
General Population:
- Ideal air quality for outdoor activities.
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.
