Manchester Air Quality in June
Across 2019–2025, Manchester's June air quality had a median AQI of 42 (Good) over 210 monitored days in the Manchester-Nashua, NH area. 1.4% of June days (3 of 210) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 86.2% of days. The cleanest June on record here was 2019 (median AQI 39, 0 days above 100) and the worst was 2023 (median 43, 2 days above 100, peak AQI 105).
- Good: 76.7%
- Moderate: 21.9%
- Unhealthy for Sensitive Groups: 1.4%
- Unhealthy or worse: 0.0%
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How is the air in Manchester in June?
Good on a typical day: median AQI 42 across 2019–2025, with 1.4% of June days above AQI 100. Ground-level ozone is the main driver.
- ✓76.7% of June days were Good (AQI 0–50), 21.9% Moderate (51–100).
- ✓3 days of 210 reached AQI 101+; the June peak was 105.
- ✓Best June: 2019; worst June: 2023.
Frequently asked questions
What is the air quality like in Manchester in June?▾
Across 2019–2025, the median daily AQI in Manchester in June was 42 (Good). 76.7% of days were Good, 21.9% Moderate, and 1.4% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is June a good time for outdoor exercise in Manchester?▾
A typical June day in Manchester sits in the Good range (median AQI 42), so running, cycling and children's outdoor play are fine for everyone on most days; about 1 day in 71 of June days (1.4%) reached AQI 101+ in 2019–2025.
Which pollutant causes Manchester's June air quality problems?▾
Ground-level ozone set the daily AQI on 86.2% of June days in Manchester. The highest June AQI recorded in 2019–2025 was 105 (Unhealthy for Sensitive Groups), in 2023.
Manchester June air quality, year by year
Manchester June air quality by year (Manchester-Nashua, NH, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019cleanest | 30 | 39 | 0 | 80 | O3 |
| 2020 | 30 | 44 | 0 | 74 | O3 |
| 2021 | 30 | 42 | 0 | 90 | O3 |
| 2022 | 30 | 40 | 0 | 74 | O3 |
| 2023worst | 30 | 43 | 2 | 105 | O3 |
| 2024 | 30 | 41 | 0 | 84 | O3 |
| 2025 | 30 | 46 | 1 | 101 | O3 |
What June air means in Manchester
A typical June day in Manchester sits in the Good range (median AQI 42), so running, cycling and children's outdoor play are fine for everyone on most days; about 1 day in 71 of June days (1.4%) reached AQI 101+ in 2019–2025.
June's median AQI of 42 is above Manchester's whole-year median of 37, making it one of the area's dirtier periods. Nationally, the median June AQI across every EPA metro area (100,635 metro-days, 2019–2025) is 46, so Manchester runs below the national June norm; 1.4% of its June days topped AQI 100 versus 3.7% nationally (below average).
June is part of Manchester's summer season (June, July, August); the summer page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Manchester
The latest EPA AirNow observation puts Manchester's AQI at 24 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Manchester air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Manchester-Nashua, NH), 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.