Hartford Air Quality in 2022
In 2022, Hartford's air quality (Hartford-West Hartford-East Hartford, CT area) had a median daily AQI of 43 (Good) across 365 monitored days. 7 days (1.9%) reached Unhealthy for Sensitive Groups or worse, 251 were Good, and the year's peak AQI was 147 (Unhealthy for Sensitive Groups). Ground-level ozone set the daily AQI on 204 of those days. The cleanest month of 2022 was December (median AQI 34, 0 days above 100) and the worst was July (median 57, 3 days above 100, peak 136).
- Good: 68.8%
- Moderate: 29.3%
- Unhealthy for Sensitive Groups: 1.9%
- Unhealthy or worse: 0.0%
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How was Hartford's air quality in 2022?
Good on a typical day: median AQI 43, with 7 days above AQI 100 out of 365 monitored — the 2nd cleanest of 7 years on record for the area.
- ✓Peak AQI in 2022: 147 (Unhealthy for Sensitive Groups).
- ✓Ground-level ozone was the main pollutant on 204 days.
- ✓Cleanest month: December; worst: July.
Frequently asked questions
What was the average AQI in Hartford in 2022?▾
EPA's Air Quality System puts Hartford's (Hartford-West Hartford-East Hartford, CT) median daily AQI for 2022 at 43, which is Good. 7 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 147.
Which month had the worst air quality in Hartford in 2022?▾
The cleanest month of 2022 was December (median AQI 34, 0 days above 100) and the worst was July (median 57, 3 days above 100, peak 136).
Was 2022 a good or bad year for Hartford's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 2nd cleanest by days above AQI 100. 2022's median of 43 is in line with the area's typical annual median of 43.
Hartford month by month in 2022
Hartford air quality month by month, 2022 (Hartford-West Hartford-East Hartford, CT, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 53 | 0 | 80 | PM2.5 |
| February | 28 | 41 | 0 | 77 | PM2.5 |
| March | 31 | 44 | 0 | 80 | O3 |
| April | 30 | 43 | 0 | 64 | O3 |
| May | 31 | 43 | 0 | 87 | O3 |
| June | 30 | 45 | 1 | 112 | O3 |
| Julyworst | 31 | 57 | 3 | 136 | O3 |
| August | 31 | 46 | 3 | 147 | O3 |
| September | 30 | 35 | 0 | 87 | O3 |
| October | 31 | 42 | 0 | 64 | PM2.5 |
| November | 30 | 41 | 0 | 61 | PM2.5 |
| Decembercleanest | 31 | 34 | 0 | 77 | PM2.5 |
How 2022 compares
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 2nd cleanest by days above AQI 100.
2022's median of 43 is in line with the area's typical annual median of 43.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Hartford
The latest EPA AirNow observation puts Hartford's AQI at 19 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Hartford air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Hartford-West Hartford-East Hartford, CT), 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.