Portland air quality · Maine, United States
Deep breaths feel amazing when the air is this clean
US AQI 26 (Good) in Portland, from 1 AirNow monitoring station. Main pollutant: PM2.5.
Updated
Pollutants in Portland
- PM2.526AQI
- NO₂17AQI
- Ozone19AQI
- PM109AQI
US values are per-pollutant AQI from the highest-reading monitor near Portland (Portland Ocean Gateway).
Is it safe outside in Portland right now?
Air quality is satisfactory and poses little or no risk.
Walking and commuting
Go aheadEnjoy it.
Running and jogging
Go aheadA great time to run outdoors.
Cycling
Go aheadRide freely.
Children playing outside
Go aheadNo limits.
Older adults and heart or lung conditions
Go aheadNo limits.
Open windows
Go aheadAir out your home.
Mask outdoors
Not neededNot needed.
Air purifier indoors
Not neededNot needed.
Based on the US EPA Air Quality Guide, applied to the current US AQI category. If you have symptoms, follow your doctor's advice.
What US AQI 0–50 means for your health →
Portland air quality history
Daily average, 36 days- 26average daily US AQI over 36 days
- 42worst day, 2 October
- 15cleanest day, 29 September
- 0days at Unhealthy or worse
The last 7 days averaged 24, better than the week before (27). 36 of the last 36 days were Good.
Weather in Portland
No active National Weather Service alerts for Portland.
| Day | Forecast | High | Low | Rain |
|---|---|---|---|---|
| Mon 19 | Sunny | 54°F | 43°F | 0% |
| Tue 20 | Partly Sunny | 59°F | 39°F | 0% |
| Wed 21 | Sunny | 54°F | 39°F | 2% |
| Thu 22 | Sunny | 59°F | 37°F | 2% |
| Fri 23 | Sunny | 54°F | 36°F | 2% |
| Sat 24 | Sunny | 54°F | 36°F | 1% |
| Sun 25 | Sunny | 59°F | 41°F | 2% |
National Weather Service forecast. All US weather alerts →
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Portland air quality: common questions
What is the AQI in Portland right now?
The US AQI in Portland is 26 (Good). The main pollutant is PM2.5.
Is it safe to go outside in Portland today?
A great time to be outside. Air quality is satisfactory and poses little or no risk. For runners: A great time to run outdoors.
How has air quality in Portland been recently?
Over the last 36 days with data, Portland averaged US AQI 26. The worst day was 2 October at 42; the cleanest was 29 September at 15. 0 days were at Unhealthy or worse.
Where does Portland's air quality data come from?
From US EPA AirNow, using 1 monitoring station in and around the city. Good Air does not estimate or adjust these readings.
Source: US EPA AirNow. Readings are published by the monitoring agency and may be revised.