The Toronto West AQHI station will experience a temporary interruption in public data reporting from Friday, April 10 to Sunday, April 12 due to scheduled maintenance activities. Air quality information from other Toronto monitoring stations will remain available.
| Air Quality Health Index categories and values | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
|||||||
| Date | Time | AQHI | Category | |
|---|---|---|---|---|
| 2026-01-01 | 4:00 pm EST | 3 |  | low risk |
| 2026-01-02 | 4:00 pm EST | 3 | | low risk |
| 2026-01-03 | 4:00 pm EST | 3 | | low risk |
| 2026-01-04 | 4:00 pm EST | 3 | | low risk |
| 2026-01-05 | 4:00 pm EST | 4 |  | moderate risk |
| 2026-01-06 | 4:00 pm EST | 3 | | low risk |
| 2026-01-07 | 4:00 pm EST | 3 | | low risk |
| 2026-01-08 | 4:00 pm EST | 3 | | low risk |
| 2026-01-09 | 4:00 pm EST | 3 | | low risk |
| 2026-01-10 | 4:00 pm EST | 2 |  | low risk |
| 2026-01-11 | 4:00 pm EST | 2 | | low risk |
| 2026-01-12 | 4:00 pm EST | 2 | | low risk |
| 2026-01-13 | 4:00 pm EST | 2 | | low risk |
| 2026-01-14 | 4:00 pm EST | 2 | | low risk |
| 2026-01-15 | 4:00 pm EST | N/A |  | |
| 2026-01-16 | 4:00 pm EST | 3 | | low risk |
| 2026-01-17 | 4:00 pm EST | 3 | | low risk |
| 2026-01-18 | 4:00 pm EST | 3 | | low risk |
| 2026-01-19 | 4:00 pm EST | 3 | | low risk |
| 2026-01-20 | 4:00 pm EST | N/A | | |
| 2026-01-21 | 4:00 pm EST | 3 | | low risk |
| 2026-01-22 | 4:00 pm EST | 3 | | low risk |
| 2026-01-23 | 4:00 pm EST | N/A | | |
| 2026-01-24 | 4:00 pm EST | N/A | | |
| 2026-01-25 | 4:00 pm EST | 3 | | low risk |
| 2026-01-26 | 4:00 pm EST | 3 | | low risk |
| 2026-01-27 | 4:00 pm EST | 4 | | moderate risk |
| 2026-01-28 | 4:00 pm EST | 3 | | low risk |
| 2026-01-29 | 4:00 pm EST | 3 | | low risk |
| 2026-01-30 | 4:00 pm EST | N/A | | |
| 2026-01-31 | 4:00 pm EST | 3 | | low risk |
| 2026-02-01 | 4:00 pm EST | 3 | | low risk |
| 2026-02-02 | 4:00 pm EST | 5 |  | moderate risk |
| 2026-02-03 | 4:00 pm EST | 4 | | moderate risk |
| 2026-02-04 | 4:00 pm EST | 4 | | moderate risk |
| 2026-02-05 | 4:00 pm EST | 4 | | moderate risk |
| 2026-02-06 | 4:00 pm EST | 5 | | moderate risk |
| 2026-02-07 | 4:00 pm EST | 4 | | moderate risk |
| 2026-02-08 | 4:00 pm EST | 4 | | moderate risk |
| 2026-02-09 | 4:00 pm EST | 3 | | low risk |
| 2026-02-10 | 4:00 pm EST | 5 | | moderate risk |
| 2026-02-11 | 4:00 pm EST | 4 | | moderate risk |
| 2026-02-12 | 4:00 pm EST | 4 | | moderate risk |
| 2026-02-13 | 4:00 pm EST | 4 | | moderate risk |
| 2026-02-14 | 4:00 pm EST | 4 | | moderate risk |
| 2026-02-15 | 4:00 pm EST | 3 | | low risk |
| 2026-02-16 | 4:00 pm EST | 5 | | moderate risk |
| 2026-02-17 | 4:00 pm EST | 5 | | moderate risk |
| 2026-02-18 | 4:00 pm EST | 2 | | low risk |
| 2026-02-19 | 4:00 pm EST | 4 | | moderate risk |
| 2026-02-20 | 4:00 pm EST | 3 | | low risk |
| 2026-02-21 | 4:00 pm EST | 3 | | low risk |
| 2026-02-22 | 4:00 pm EST | 5 | | moderate risk |
| 2026-02-23 | 4:00 pm EST | 5 | | moderate risk |
| 2026-02-24 | 4:00 pm EST | 3 | | low risk |
| 2026-02-25 | 4:00 pm EST | 4 | | moderate risk |
| 2026-02-26 | 4:00 pm EST | 4 | | moderate risk |
| 2026-02-27 | 4:00 pm EST | 5 | | moderate risk |
| 2026-02-28 | 4:00 pm EST | 5 | | moderate risk |
| 2026-03-01 | 4:00 pm EST | 5 | | moderate risk |
| 2026-03-02 | 4:00 pm EST | 4 | | moderate risk |
| 2026-03-03 | 4:00 pm EST | 6 |  | moderate risk |
| 2026-03-04 | 4:00 pm EST | 5 | | moderate risk |
| 2026-03-05 | 4:00 pm EST | 3 | | low risk |
| 2026-03-06 | 4:00 pm EST | 5 | | moderate risk |
| 2026-03-07 | 4:00 pm EST | 2 | | low risk |
| 2026-03-08 | 4:00 pm EDT | 2 | | low risk |
| 2026-03-09 | 4:00 pm EDT | 3 | | low risk |
| 2026-03-10 | 4:00 pm EDT | 4 | | moderate risk |
| 2026-03-11 | 4:00 pm EDT | 2 | | low risk |
| 2026-03-12 | 4:00 pm EDT | 5 | | moderate risk |
| 2026-03-13 | 4:00 pm EDT | 4 | | moderate risk |
| 2026-03-14 | 4:00 pm EDT | 4 | | moderate risk |
| 2026-03-15 | 4:00 pm EDT | 4 | | moderate risk |
| 2026-03-16 | 4:00 pm EDT | 3 | | low risk |
| 2026-03-17 | 4:00 pm EDT | 3 | | low risk |
| 2026-03-18 | 4:00 pm EDT | 3 | | low risk |
| 2026-03-19 | 4:00 pm EDT | 4 | | moderate risk |
| 2026-03-20 | 4:00 pm EDT | 6 | | moderate risk |
| 2026-03-21 | 4:00 pm EDT | 4 | | moderate risk |
| 2026-03-22 | 4:00 pm EDT | 3 | | low risk |
| 2026-03-23 | 4:00 pm EDT | 5 | | moderate risk |
| 2026-03-24 | 4:00 pm EDT | 4 | | moderate risk |
| 2026-03-25 | 4:00 pm EDT | 6 | | moderate risk |
| 2026-03-26 | 4:00 pm EDT | 5 | | moderate risk |
| 2026-03-27 | 4:00 pm EDT | 4 | | moderate risk |
| 2026-03-28 | 4:00 pm EDT | 5 | | moderate risk |
| 2026-03-29 | 4:00 pm EDT | 5 | | moderate risk |
| 2026-03-30 | 4:00 pm EDT | 5 | | moderate risk |
| 2026-03-31 | 4:00 pm EDT | 3 | | low risk |
| 2026-04-01 | 4:00 pm EDT | 4 | | moderate risk |
| 2026-04-02 | 4:00 pm EDT | 4 | | moderate risk |
| 2026-04-03 | 4:00 pm EDT | 3 | | low risk |
| 2026-04-04 | 4:00 pm EDT | 2 | | low risk |
| 2026-04-05 | 4:00 pm EDT | 2 | | low risk |
| 2026-04-06 | 4:00 pm EDT | 4 | | moderate risk |
| 2026-04-07 | 4:00 pm EDT | 5 | | moderate risk |
| 2026-04-08 | 4:00 pm EDT | 4 | | moderate risk |
| 2026-04-09 | 4:00 pm EDT | 4 | | moderate risk |
| 2026-04-10 | 4:00 pm EDT | 3 | | low risk |
Choose your search terms.
AQHI readings on this web page are based on automatically polled data and have not undergone final verification.
