Billings Air Quality in June
Across 2019–2025, Billings's June air quality had a median AQI of 32 (Good) over 209 monitored days in the Billings, MT area. 0.0% of June days (0 of 209) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 80.9% of days. The cleanest June on record here was 2023 (median AQI 17, 0 days above 100) and the worst was 2021 (median 53, 0 days above 100, peak AQI 64).
- Good: 80.4%
- Moderate: 19.6%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Billings
Today's main pollutant in Billings is ground-level ozone (AQI 21). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
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How is the air in Billings in June?
Good on a typical day: median AQI 32 across 2019–2025, with 0.0% of June days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓80.4% of June days were Good (AQI 0–50), 19.6% Moderate (51–100).
- ✓0 days of 209 reached AQI 101+; the June peak was 85.
- ✓Best June: 2023; worst June: 2021.
Frequently asked questions
What is the air quality like in Billings in June?▾
Across 2019–2025, the median daily AQI in Billings in June was 32 (Good). 80.4% of days were Good, 19.6% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 209 monitored days in EPA's Air Quality System.
Is June a good time for outdoor exercise in Billings?▾
A typical June day in Billings sits in the Good range (median AQI 32), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of June days reached AQI 101+ in 2019–2025.
Which pollutant causes Billings's June air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 80.9% of June days in Billings. The highest June AQI recorded in 2019–2025 was 85 (Moderate), in 2021.
Billings June air quality, year by year
Billings June air quality by year (Billings, MT, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 30 | 27 | 0 | 61 | PM2.5 |
| 2020 | 30 | 21 | 0 | 50 | PM2.5 |
| 2021worst | 29 | 53 | 0 | 64 | PM2.5 |
| 2022 | 30 | 24 | 0 | 51 | PM2.5 |
| 2023cleanest | 30 | 17 | 0 | 57 | PM2.5 |
| 2024 | 30 | 44 | 0 | 61 | O3 |
| 2025 | 30 | 46 | 0 | 85 | O3 |
What June air means in Billings
A typical June day in Billings sits in the Good range (median AQI 32), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of June days reached AQI 101+ in 2019–2025.
June's median AQI of 32 is below Billings's whole-year median of 38, making it one of the area's cleaner periods. Nationally, the median June AQI across every EPA metro area (100,635 metro-days, 2019–2025) is 46, so Billings runs below the national June norm; 0.0% of its June days topped AQI 100 versus 3.7% nationally (below average).
June is part of Billings's summer season (June, July, August); the summer page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Billings
The latest EPA AirNow observation puts Billings's AQI at 21 (O3). The figures above are multi-year month statistics, not today's reading.
View current Billings air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Billings, MT), 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.