SmogRank / Castlegar / Kamloops
Castlegar vs Kamloops: PM2.5 compared
Over the last year, Kamloops's air was 14% more polluted than Castlegar's: PM2.5 averaged 12.6 µg/m³ against 11.1, on the 310 days both cities were measured. Kamloops had the dirtier air on 148 of those days, Castlegar on 160. Kamloops was over the WHO's daily guideline of 15 µg/m³ on 39 of them, Castlegar on 37.
Right now
The last year, day by day
Month by month
Year by year
| Year | Castlegar | Kamloops | Days Castlegar was worse |
|---|---|---|---|
| 2026 so far | 57 | 61 | 121 |
| 2025 | 42 | 38 | 172 |
| 2024 | 39 | 36 | 196 |
| 2023 | 54 | 61 | 113 |
Means in US AQI over the days both cities were measured that year; a year shows once they share 30 such days.
Each city's worst days
Castlegar
- 11 Aug 2026227152.0 µg/m³
- 9 Aug 2026193116.0 µg/m³
- 7 Aug 2026187107.0 µg/m³
Kamloops
- 7 Aug 2026266191.0 µg/m³
- 9 Aug 2026242167.0 µg/m³
- 31 Jul 2026221146.0 µg/m³
Daily means in US AQI, with µg/m³ beside them, since the index stops at its top value, over the days both cities were measured in the last year. Each date opens that day's world board.
Compare either city with another
Castlegar
Side by side with Creston (the nearest), Edmonton (Canada's 2nd worst on 30 days), Gujranwala (the world's worst on 30 days).
Kamloops
Side by side with Vernon (the nearest), Gujranwala (the world's worst on 30 days).
Use this page
SmogRank, PM2.5 daily means compared, Castlegar and Kamloops, 7 Oct 2025 – 6 Oct 2026, smogrank.com/compare/ca-castlegar/ca-kamloops (accessed 7 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
The same rules as every SmogRank figure: reference monitors first, and a day counts with 18 measured hours. How we measure.
Updated 2026-10-07 08:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.