St. Paul Air Quality in 2022
In 2022, St. Paul's air quality (Minneapolis-St. Paul-Bloomington, MN-WI area) had a median daily AQI of 48 (Good) across 365 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 206 were Good, and the year's peak AQI was 96 (Moderate). Fine particulate matter (PM2.5) set the daily AQI on 201 of those days. The cleanest month of 2022 was April (median AQI 40, 0 days above 100) and the worst was January (median 56, 0 days above 100, peak 96).
- Good: 56.4%
- Moderate: 43.6%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How was St. Paul's air quality in 2022?
Good on a typical day: median AQI 48, with 0 days above AQI 100 out of 365 monitored — the 1st cleanest of 7 years on record for the area.
- ✓Peak AQI in 2022: 96 (Moderate).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 201 days.
- ✓Cleanest month: April; worst: January.
Frequently asked questions
What was the average AQI in St. Paul in 2022?▾
EPA's Air Quality System puts St. Paul's (Minneapolis-St. Paul-Bloomington, MN-WI) median daily AQI for 2022 at 48, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 96.
Which month had the worst air quality in St. Paul in 2022?▾
The cleanest month of 2022 was April (median AQI 40, 0 days above 100) and the worst was January (median 56, 0 days above 100, peak 96).
Was 2022 a good or bad year for St. Paul's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 1st cleanest by days above AQI 100 — the best year on record here. 2022's median of 48 is in line with the area's typical annual median of 50.
St. Paul month by month in 2022
St. Paul air quality month by month, 2022 (Minneapolis-St. Paul-Bloomington, MN-WI, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| Januaryworst | 31 | 56 | 0 | 96 | PM2.5 |
| February | 28 | 53 | 0 | 71 | PM2.5 |
| March | 31 | 41 | 0 | 69 | O3 |
| Aprilcleanest | 30 | 40 | 0 | 60 | O3 |
| May | 31 | 48 | 0 | 77 | O3 |
| June | 30 | 50 | 0 | 87 | O3 |
| July | 31 | 50 | 0 | 90 | O3 |
| August | 31 | 46 | 0 | 93 | PM2.5 |
| September | 30 | 49 | 0 | 91 | PM2.5 |
| October | 31 | 55 | 0 | 90 | PM2.5 |
| November | 30 | 49 | 0 | 87 | PM2.5 |
| December | 31 | 48 | 0 | 68 | PM2.5 |
How 2022 compares
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 1st cleanest by days above AQI 100 — the best year on record here.
2022's median of 48 is in line with the area's typical annual median of 50.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in St. Paul
The latest EPA AirNow observation puts St. Paul's AQI at 31 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current St. Paul air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Minneapolis-St. Paul-Bloomington, MN-WI), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.