What is the current level of PM10 in South Portland, Maine?

South Portland, Maine currently has a PM10 concentration of 97.275 μg/m3.

What is the current level of sulfur dioxide (SO2) in South Portland, Maine?

The current sulfur dioxide (SO2) concentration in South Portland, Maine is 0.641 ppb.

What is the current level of ozone (O3) in South Portland, Maine?

South Portland, Maine currently has an ozone (O3) concentration of 35.256 ppm.

What is the current level of nitrogen dioxide (NO2) in South Portland, Maine?

The current level of nitrogen dioxide (NO2) in South Portland, Maine is 9.742 ppb.

Current air quality index in South Portland, Maine today

Q: What is the PM2.5 concentration in South Portland, Maine right now?

South Portland, Maine currently has a PM2.5 concentration of 11.721 μg/m3.

Stay updated with real-time air quality in South Portland, Maine featuring accurate data on AQI, PM_2.5, PM₁₀, O₃, NO₂, SO₂, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.

Live AQI (Air Quality Index)

Moderate

South Portland, Maine

Last updated: ... (Local time)

Common air pollutants in South Portland, Maine

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

11.72 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

97.28 μg/m³

155

255

425

605+

Ozone (O₃)

35.26 ppb

201

201+

Sulfur Dioxide (SO₂)

0.64 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

9.74 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.25 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

South Portland, Maine

Get Live Pollen Counts

South Portland, Maine

Scroll To Air Quality Map

Track live South Portland, Maine air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-26T22:00:00.000Z	38 \| good	7.132 \| good	14.096 \| good	34.609 \| good	0.569 \| good	4.468 \| good	0.208 \| good
2025-12-26T23:00:00.000Z	33 \| good	6.373 \| good	15.506 \| good	32.076 \| good	0.617 \| good	6.25 \| good	0.264 \| good
2025-12-27T00:00:00.000Z	38 \| good	7.198 \| good	17.966 \| good	31.08 \| good	0.629 \| good	13.44 \| good	0.25 \| good
2025-12-27T01:00:00.000Z	52 \| moderate	9.962 \| good	20.575 \| good	28.552 \| good	0.684 \| good	7.516 \| good	0.286 \| good
2025-12-27T02:00:00.000Z	54 \| moderate	11.177 \| good	32.915 \| good	25.88 \| good	0.634 \| good	7.033 \| good	0.272 \| good
2025-12-27T03:00:00.000Z	49 \| good	8.58 \| good	14.997 \| good	24.719 \| good	0.601 \| good	10.403 \| good	0.272 \| good
2025-12-27T04:00:00.000Z	44 \| good	8.319 \| good	29.492 \| good	24.467 \| good	0.619 \| good	8.724 \| good	0.272 \| good
2025-12-27T05:00:00.000Z	44 \| good	7.889 \| good	33.554 \| good	26.097 \| good	0.637 \| good	8.073 \| good	0.212 \| good
2025-12-27T06:00:00.000Z	38 \| good	6.868 \| good	24.5 \| good	26.212 \| good	0.635 \| good	7.937 \| good	0.193 \| good
2025-12-27T07:00:00.000Z	33 \| good	6.336 \| good	24.08 \| good	27.872 \| good	0.634 \| good	6.976 \| good	0.193 \| good
2025-12-27T08:00:00.000Z	27 \| good	4.944 \| good	20.502 \| good	28.344 \| good	0.551 \| good	4.676 \| good	0.193 \| good
2025-12-27T09:00:00.000Z	29 \| good	4.076 \| good	14.351 \| good	30.894 \| good	0.596 \| good	7.622 \| good	0.174 \| good
2025-12-27T10:00:00.000Z	27 \| good	3.217 \| good	15.411 \| good	28.524 \| good	0.516 \| good	5.761 \| good	0.189 \| good
2025-12-27T11:00:00.000Z	23 \| good	2.712 \| good	13.907 \| good	24.722 \| good	0.549 \| good	3.352 \| good	0.174 \| good
2025-12-27T12:00:00.000Z	29 \| good	2.81 \| good	8.612 \| good	30.535 \| good	0.549 \| good	3.299 \| good	0.174 \| good
2025-12-27T13:00:00.000Z	31 \| good	2.922 \| good	8.375 \| good	32.656 \| good	0.549 \| good	2.871 \| good	0.2 \| good
2025-12-27T14:00:00.000Z	31 \| good	4.158 \| good	17.762 \| good	34.419 \| good	0.529 \| good	3.027 \| good	0.222 \| good
2025-12-27T15:00:00.000Z	31 \| good	4.875 \| good	24.743 \| good	32.981 \| good	0.548 \| good	3.548 \| good	0.248 \| good
2025-12-27T16:00:00.000Z	31 \| good	5.105 \| good	20.1 \| good	33.51 \| good	0.568 \| good	3.083 \| good	0.219 \| good
2025-12-27T17:00:00.000Z	38 \| good	6.848 \| good	32.614 \| good	33.83 \| good	0.634 \| good	2.575 \| good	0.233 \| good
2025-12-27T18:00:00.000Z	38 \| good	7.422 \| good	36.721 \| good	34.653 \| good	0.666 \| good	3.112 \| good	0.193 \| good
2025-12-27T19:00:00.000Z	44 \| good	8.271 \| good	32.308 \| good	33.489 \| good	0.633 \| good	4.159 \| good	0.193 \| good
2025-12-27T20:00:00.000Z	44 \| good	8.21 \| good	33.111 \| good	32.011 \| good	0.613 \| good	5.145 \| good	0.193 \| good
2025-12-27T21:00:00.000Z	44 \| good	7.759 \| good	35.723 \| good	34.227 \| good	0.608 \| good	5.231 \| good	0.227 \| good
2025-12-27T22:00:00.000Z	49 \| good	8.738 \| good	18.555 \| good	33.095 \| good	0.546 \| good	5.421 \| good	0.26 \| good
2025-12-27T23:00:00.000Z	52 \| moderate	10.112 \| good	16.836 \| good	33.366 \| good	0.56 \| good	13.275 \| good	0.265 \| good
2025-12-28T00:00:00.000Z	52 \| moderate	9.862 \| good	31.222 \| good	28.704 \| good	0.602 \| good	26.909 \| good	0.317 \| good
2025-12-28T01:00:00.000Z	52 \| moderate	9.596 \| good	35.067 \| good	23.016 \| good	0.52 \| good	27.492 \| good	0.389 \| good
2025-12-28T02:00:00.000Z	60 \| moderate	14.061 \| fine	42.48 \| good	16.469 \| good	0.545 \| good	24.971 \| good	0.415 \| good
2025-12-28T03:00:00.000Z	49 \| good	9.309 \| good	41.479 \| good	13.777 \| good	0.557 \| good	14.097 \| good	0.287 \| good
2025-12-28T04:00:00.000Z	60 \| moderate	13.606 \| fine	47.92 \| good	7.812 \| good	0.544 \| good	19.899 \| good	0.286 \| good
2025-12-28T05:00:00.000Z	56 \| moderate	11.578 \| good	15.129 \| good	9.034 \| good	0.527 \| good	21.543 \| good	0.286 \| good
2025-12-28T06:00:00.000Z	56 \| moderate	11.97 \| good	19.454 \| good	7.916 \| good	0.582 \| good	17.958 \| good	0.272 \| good
2025-12-28T07:00:00.000Z	58 \| moderate	13.029 \| fine	16.789 \| good	7.723 \| good	0.582 \| good	18.564 \| good	0.272 \| good
2025-12-28T08:00:00.000Z	58 \| moderate	13.071 \| fine	25.086 \| good	10.14 \| good	0.568 \| good	16.21 \| good	0.276 \| good
2025-12-28T09:00:00.000Z	58 \| moderate	12.692 \| fine	27.067 \| good	7.483 \| good	0.582 \| good	18.812 \| good	0.324 \| good
2025-12-28T10:00:00.000Z	54 \| moderate	11.143 \| good	27.226 \| good	7.288 \| good	0.568 \| good	19.201 \| good	0.324 \| good
2025-12-28T11:00:00.000Z	54 \| moderate	11.121 \| good	19.699 \| good	7.435 \| good	0.617 \| good	17.85 \| good	0.324 \| good
2025-12-28T12:00:00.000Z	54 \| moderate	11.034 \| good	22.368 \| good	9.286 \| good	0.651 \| good	12.274 \| good	0.309 \| good
2025-12-28T13:00:00.000Z	52 \| moderate	9.658 \| good	32.26 \| good	12.694 \| good	0.652 \| good	13.69 \| good	0.378 \| good
2025-12-28T14:00:00.000Z	44 \| good	8.31 \| good	15.71 \| good	21.566 \| good	0.714 \| good	19.581 \| good	0.317 \| good
2025-12-28T15:00:00.000Z	52 \| moderate	10.105 \| good	37.984 \| good	24.097 \| good	1.138 \| good	10.427 \| good	0.269 \| good
2025-12-28T16:00:00.000Z	54 \| moderate	11.483 \| good	55.602 \| fine	22.871 \| good	0.969 \| good	11.009 \| good	0.254 \| good
2025-12-28T17:00:00.000Z	52 \| moderate	10.325 \| good	21.462 \| good	32.694 \| good	1.569 \| good	7.911 \| good	0.235 \| good
2025-12-28T18:00:00.000Z	54 \| moderate	10.807 \| good	13.499 \| good	28.484 \| good	1.11 \| good	6.03 \| good	0.209 \| good
2025-12-28T19:00:00.000Z	44 \| good	8.288 \| good	29.644 \| good	32.358 \| good	1.104 \| good	8.513 \| good	0.209 \| good
2025-12-28T20:00:00.000Z	44 \| good	8.263 \| good	44.775 \| good	32.337 \| good	0.644 \| good	9.971 \| good	0.25 \| good
2025-12-28T21:00:00.000Z	72 \| moderate	11.721 \| good	97.275 \| fine	35.256 \| good	0.641 \| good	9.742 \| good	0.253 \| good
2025-12-28T22:00:00.000Z	49 \| good	9.499 \| good	42.409 \| good	19.903 \| good	0.659 \| good	9.487 \| good	0.222 \| good
2025-12-28T23:00:00.000Z	54 \| moderate	11.178 \| good	49.362 \| good	19.971 \| good	0.682 \| good	11.125 \| good	0.239 \| good
2025-12-29T00:00:00.000Z	60 \| moderate	13.536 \| fine	60.268 \| fine	13.543 \| good	0.705 \| good	12.762 \| good	0.256 \| good
2025-12-29T01:00:00.000Z	60 \| moderate	13.728 \| fine	62.159 \| fine	14.63 \| good	0.814 \| good	13.644 \| good	0.264 \| good
2025-12-29T02:00:00.000Z	58 \| moderate	13.07 \| fine	58.44 \| fine	12.622 \| good	0.923 \| good	14.527 \| good	0.272 \| good
2025-12-29T03:00:00.000Z	62 \| moderate	14.885 \| fine	66.337 \| fine	12.175 \| good	1.032 \| good	15.409 \| good	0.28 \| good
2025-12-29T04:00:00.000Z	64 \| moderate	16.342 \| fine	72.271 \| fine	8.417 \| good	1.036 \| good	15.016 \| good	0.273 \| good
2025-12-29T05:00:00.000Z	66 \| moderate	16.914 \| fine	75.791 \| fine	8.688 \| good	1.04 \| good	14.623 \| good	0.267 \| good
2025-12-29T06:00:00.000Z	67 \| moderate	17.571 \| fine	78.176 \| fine	9.334 \| good	1.044 \| good	14.229 \| good	0.26 \| good
2025-12-29T07:00:00.000Z	67 \| moderate	17.947 \| fine	78.739 \| fine	8.445 \| good	1.032 \| good	13.668 \| good	0.245 \| good
2025-12-29T08:00:00.000Z	64 \| moderate	16.276 \| fine	72.767 \| fine	10.827 \| good	1.02 \| good	13.106 \| good	0.23 \| good
2025-12-29T09:00:00.000Z	54 \| moderate	10.994 \| good	48.314 \| good	23.212 \| good	1.008 \| good	12.545 \| good	0.215 \| good
2025-12-29T10:00:00.000Z	44 \| good	8.188 \| good	36.116 \| good	26.809 \| good	0.747 \| good	9.335 \| good	0.194 \| good
2025-12-29T11:00:00.000Z	33 \| good	6.261 \| good	28.021 \| good	27.705 \| good	0.485 \| good	6.125 \| good	0.172 \| good
2025-12-29T12:00:00.000Z	27 \| good	4.76 \| good	21.028 \| good	28.083 \| good	0.224 \| good	2.915 \| good	0.151 \| good
2025-12-29T13:00:00.000Z	28 \| good	5.048 \| good	22.008 \| good	30.201 \| good	0.234 \| good	2.917 \| good	0.151 \| good
2025-12-29T14:00:00.000Z	38 \| good	6.561 \| good	29.081 \| good	29.705 \| good	0.243 \| good	2.92 \| good	0.151 \| good
2025-12-29T15:00:00.000Z	38 \| good	7.458 \| good	33.041 \| good	24.812 \| good	0.253 \| good	2.923 \| good	0.151 \| good
2025-12-29T16:00:00.000Z	44 \| good	8.337 \| good	36.922 \| good	20.025 \| good	0.339 \| good	4.224 \| good	0.16 \| good
2025-12-29T17:00:00.000Z	52 \| moderate	9.563 \| good	42.836 \| good	16.56 \| good	0.424 \| good	5.526 \| good	0.17 \| good
2025-12-29T18:00:00.000Z	52 \| moderate	10.387 \| good	45.843 \| good	14.758 \| good	0.51 \| good	6.828 \| good	0.179 \| good
2025-12-29T19:00:00.000Z	54 \| moderate	10.8 \| good	47.804 \| good	13.807 \| good	0.551 \| good	8.377 \| good	0.192 \| good
2025-12-29T20:00:00.000Z	54 \| moderate	11.169 \| good	49.622 \| good	12.24 \| good	0.591 \| good	9.927 \| good	0.205 \| good
2025-12-29T21:00:00.000Z	58 \| moderate	13.286 \| fine	60.441 \| fine	9.102 \| good	0.632 \| good	11.476 \| good	0.219 \| good
2025-12-29T22:00:00.000Z	56 \| moderate	12.272 \| fine	54.683 \| good	20.466 \| good	0.721 \| good	11.643 \| good	0.222 \| good
2025-12-29T23:00:00.000Z	52 \| moderate	10.323 \| good	45.739 \| good	26.33 \| good	0.811 \| good	11.811 \| good	0.226 \| good
2025-12-30T00:00:00.000Z	54 \| moderate	10.744 \| good	47.777 \| good	26.44 \| good	0.9 \| good	11.978 \| good	0.229 \| good
2025-12-30T01:00:00.000Z	49 \| good	9.247 \| good	41.081 \| good	26.268 \| good	0.681 \| good	8.63 \| good	0.214 \| good
2025-12-30T02:00:00.000Z	38 \| good	6.648 \| good	29.913 \| good	20.675 \| good	0.461 \| good	5.282 \| good	0.199 \| good
2025-12-30T03:00:00.000Z	33 \| good	5.839 \| good	24.988 \| good	20.445 \| good	0.242 \| good	1.934 \| good	0.184 \| good
2025-12-30T04:00:00.000Z	22 \| good	4.251 \| good	18.833 \| good	19.003 \| good	0.251 \| good	1.73 \| good	0.175 \| good
2025-12-30T05:00:00.000Z	22 \| good	3.636 \| good	16 \| good	20.341 \| good	0.259 \| good	1.526 \| good	0.166 \| good
2025-12-30T06:00:00.000Z	19 \| good	3.028 \| good	12.05 \| good	19.844 \| good	0.268 \| good	1.322 \| good	0.156 \| good
2025-12-30T07:00:00.000Z	19 \| good	2.191 \| good	8.98 \| good	20.207 \| good	0.253 \| good	1.181 \| good	0.151 \| good
2025-12-30T08:00:00.000Z	20 \| good	1.139 \| good	4.988 \| good	21.784 \| good	0.237 \| good	1.04 \| good	0.146 \| good
2025-12-30T09:00:00.000Z	21 \| good	0.889 \| good	3.08 \| good	22.77 \| good	0.222 \| good	0.899 \| good	0.14 \| good
2025-12-30T10:00:00.000Z	19 \| good	0.638 \| good	2.034 \| good	21.288 \| good	0.194 \| good	0.888 \| good	0.138 \| good
2025-12-30T11:00:00.000Z	19 \| good	0.67 \| good	2.093 \| good	20.133 \| good	0.166 \| good	0.877 \| good	0.137 \| good
2025-12-30T12:00:00.000Z	20 \| good	1.697 \| good	6.945 \| good	21.842 \| good	0.139 \| good	0.867 \| good	0.135 \| good
2025-12-30T13:00:00.000Z	23 \| good	2.031 \| good	8.04 \| good	24.76 \| good	0.133 \| good	0.738 \| good	0.135 \| good
2025-12-30T14:00:00.000Z	24 \| good	2.868 \| good	11.873 \| good	26.059 \| good	0.126 \| good	0.61 \| good	0.134 \| good
2025-12-30T15:00:00.000Z	25 \| good	2.871 \| good	11.9 \| good	26.954 \| good	0.12 \| good	0.481 \| good	0.134 \| good
2025-12-30T16:00:00.000Z	27 \| good	2.399 \| good	9.939 \| good	28.599 \| good	0.117 \| good	0.471 \| good	0.134 \| good
2025-12-30T17:00:00.000Z	27 \| good	2.618 \| good	10.88 \| good	28.672 \| good	0.114 \| good	0.46 \| good	0.133 \| good
2025-12-30T18:00:00.000Z	27 \| good	2.881 \| good	11.848 \| good	29.259 \| good	0.11 \| good	0.45 \| good	0.133 \| good
2025-12-30T19:00:00.000Z	26 \| good	2.523 \| good	10.013 \| good	28.268 \| good	0.112 \| good	0.623 \| good	0.134 \| good
2025-12-30T20:00:00.000Z	25 \| good	2.434 \| good	9.952 \| good	27.421 \| good	0.114 \| good	0.795 \| good	0.134 \| good
2025-12-30T21:00:00.000Z	25 \| good	2.744 \| good	11.031 \| good	26.833 \| good	0.116 \| good	0.968 \| good	0.135 \| good

South Portland

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near South Portland, Maine

0.24ppm

How accurate is Maine, USA air quality data?

The air quality data for Maine, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.

Source: Ambee Data Sources

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Check live rankings of places in the USA affected by air pollution.

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Frequently asked questions

How frequently does the air quality data for South Portland, Maine get updated?

Air quality updates for South Portland, Maine are available every hour.

What time in the past 24 hours saw the poorest air quality in South Portland, Maine?

South Portland, Maine experienced its worst air quality at 04:00:00, 2025-12-28.

When was air quality in South Portland, Maine the best over the past 24 hours?

The best air quality in South Portland, Maine was observed at 08:00:00 on 2025-12-28.

What is the air quality in South Portland, Maine right now?

The air quality in South Portland, Maine right now is Moderate, with an AQI of 72.

What pollutant is most frequently found in South Portland, Maine?

In South Portland, Maine, PM10 is the most frequently found pollutant.

What can I do if the air quality in South Portland, Maine is poor?

When air quality in South Portland, Maine is compromised, staying indoors and wearing a mask can reduce health risks.

What is the PM_2.5 concentration in South Portland, Maine right now?

South Portland, Maine currently has a PM_2.5 concentration of 11.721 μg/m³.

What is the current level of PM₁₀ in South Portland, Maine?

South Portland, Maine currently has a PM₁₀ concentration of 97.275 μg/m³.

What is the current level of carbon monoxide (CO) in South Portland, Maine?

The current carbon monoxide (CO) level in South Portland, Maine is 0.253 ppm.

What is the current level of sulfur dioxide (SO₂) in South Portland, Maine?

The current sulfur dioxide (SO₂) concentration in South Portland, Maine is 0.641 ppb.

What is the current level of ozone (O₃) in South Portland, Maine?

South Portland, Maine currently has an ozone (O₃) concentration of 35.256 ppm.

What is the current level of nitrogen dioxide (NO₂) in South Portland, Maine?

The current level of nitrogen dioxide (NO₂) in South Portland, Maine is 9.742 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-26T22:00:00.000Z	38 \| good	7.132 \| good	14.096 \| good	34.609 \| good	0.569 \| good	4.468 \| good	0.208 \| good
2025-12-26T23:00:00.000Z	33 \| good	6.373 \| good	15.506 \| good	32.076 \| good	0.617 \| good	6.25 \| good	0.264 \| good
2025-12-27T00:00:00.000Z	38 \| good	7.198 \| good	17.966 \| good	31.08 \| good	0.629 \| good	13.44 \| good	0.25 \| good
2025-12-27T01:00:00.000Z	52 \| moderate	9.962 \| good	20.575 \| good	28.552 \| good	0.684 \| good	7.516 \| good	0.286 \| good
2025-12-27T02:00:00.000Z	54 \| moderate	11.177 \| good	32.915 \| good	25.88 \| good	0.634 \| good	7.033 \| good	0.272 \| good
2025-12-27T03:00:00.000Z	49 \| good	8.58 \| good	14.997 \| good	24.719 \| good	0.601 \| good	10.403 \| good	0.272 \| good
2025-12-27T04:00:00.000Z	44 \| good	8.319 \| good	29.492 \| good	24.467 \| good	0.619 \| good	8.724 \| good	0.272 \| good
2025-12-27T05:00:00.000Z	44 \| good	7.889 \| good	33.554 \| good	26.097 \| good	0.637 \| good	8.073 \| good	0.212 \| good
2025-12-27T06:00:00.000Z	38 \| good	6.868 \| good	24.5 \| good	26.212 \| good	0.635 \| good	7.937 \| good	0.193 \| good
2025-12-27T07:00:00.000Z	33 \| good	6.336 \| good	24.08 \| good	27.872 \| good	0.634 \| good	6.976 \| good	0.193 \| good
2025-12-27T08:00:00.000Z	27 \| good	4.944 \| good	20.502 \| good	28.344 \| good	0.551 \| good	4.676 \| good	0.193 \| good
2025-12-27T09:00:00.000Z	29 \| good	4.076 \| good	14.351 \| good	30.894 \| good	0.596 \| good	7.622 \| good	0.174 \| good
2025-12-27T10:00:00.000Z	27 \| good	3.217 \| good	15.411 \| good	28.524 \| good	0.516 \| good	5.761 \| good	0.189 \| good
2025-12-27T11:00:00.000Z	23 \| good	2.712 \| good	13.907 \| good	24.722 \| good	0.549 \| good	3.352 \| good	0.174 \| good
2025-12-27T12:00:00.000Z	29 \| good	2.81 \| good	8.612 \| good	30.535 \| good	0.549 \| good	3.299 \| good	0.174 \| good
2025-12-27T13:00:00.000Z	31 \| good	2.922 \| good	8.375 \| good	32.656 \| good	0.549 \| good	2.871 \| good	0.2 \| good
2025-12-27T14:00:00.000Z	31 \| good	4.158 \| good	17.762 \| good	34.419 \| good	0.529 \| good	3.027 \| good	0.222 \| good
2025-12-27T15:00:00.000Z	31 \| good	4.875 \| good	24.743 \| good	32.981 \| good	0.548 \| good	3.548 \| good	0.248 \| good
2025-12-27T16:00:00.000Z	31 \| good	5.105 \| good	20.1 \| good	33.51 \| good	0.568 \| good	3.083 \| good	0.219 \| good
2025-12-27T17:00:00.000Z	38 \| good	6.848 \| good	32.614 \| good	33.83 \| good	0.634 \| good	2.575 \| good	0.233 \| good
2025-12-27T18:00:00.000Z	38 \| good	7.422 \| good	36.721 \| good	34.653 \| good	0.666 \| good	3.112 \| good	0.193 \| good
2025-12-27T19:00:00.000Z	44 \| good	8.271 \| good	32.308 \| good	33.489 \| good	0.633 \| good	4.159 \| good	0.193 \| good
2025-12-27T20:00:00.000Z	44 \| good	8.21 \| good	33.111 \| good	32.011 \| good	0.613 \| good	5.145 \| good	0.193 \| good
2025-12-27T21:00:00.000Z	44 \| good	7.759 \| good	35.723 \| good	34.227 \| good	0.608 \| good	5.231 \| good	0.227 \| good
2025-12-27T22:00:00.000Z	49 \| good	8.738 \| good	18.555 \| good	33.095 \| good	0.546 \| good	5.421 \| good	0.26 \| good
2025-12-27T23:00:00.000Z	52 \| moderate	10.112 \| good	16.836 \| good	33.366 \| good	0.56 \| good	13.275 \| good	0.265 \| good
2025-12-28T00:00:00.000Z	52 \| moderate	9.862 \| good	31.222 \| good	28.704 \| good	0.602 \| good	26.909 \| good	0.317 \| good
2025-12-28T01:00:00.000Z	52 \| moderate	9.596 \| good	35.067 \| good	23.016 \| good	0.52 \| good	27.492 \| good	0.389 \| good
2025-12-28T02:00:00.000Z	60 \| moderate	14.061 \| fine	42.48 \| good	16.469 \| good	0.545 \| good	24.971 \| good	0.415 \| good
2025-12-28T03:00:00.000Z	49 \| good	9.309 \| good	41.479 \| good	13.777 \| good	0.557 \| good	14.097 \| good	0.287 \| good
2025-12-28T04:00:00.000Z	60 \| moderate	13.606 \| fine	47.92 \| good	7.812 \| good	0.544 \| good	19.899 \| good	0.286 \| good
2025-12-28T05:00:00.000Z	56 \| moderate	11.578 \| good	15.129 \| good	9.034 \| good	0.527 \| good	21.543 \| good	0.286 \| good
2025-12-28T06:00:00.000Z	56 \| moderate	11.97 \| good	19.454 \| good	7.916 \| good	0.582 \| good	17.958 \| good	0.272 \| good
2025-12-28T07:00:00.000Z	58 \| moderate	13.029 \| fine	16.789 \| good	7.723 \| good	0.582 \| good	18.564 \| good	0.272 \| good
2025-12-28T08:00:00.000Z	58 \| moderate	13.071 \| fine	25.086 \| good	10.14 \| good	0.568 \| good	16.21 \| good	0.276 \| good
2025-12-28T09:00:00.000Z	58 \| moderate	12.692 \| fine	27.067 \| good	7.483 \| good	0.582 \| good	18.812 \| good	0.324 \| good
2025-12-28T10:00:00.000Z	54 \| moderate	11.143 \| good	27.226 \| good	7.288 \| good	0.568 \| good	19.201 \| good	0.324 \| good
2025-12-28T11:00:00.000Z	54 \| moderate	11.121 \| good	19.699 \| good	7.435 \| good	0.617 \| good	17.85 \| good	0.324 \| good
2025-12-28T12:00:00.000Z	54 \| moderate	11.034 \| good	22.368 \| good	9.286 \| good	0.651 \| good	12.274 \| good	0.309 \| good
2025-12-28T13:00:00.000Z	52 \| moderate	9.658 \| good	32.26 \| good	12.694 \| good	0.652 \| good	13.69 \| good	0.378 \| good
2025-12-28T14:00:00.000Z	44 \| good	8.31 \| good	15.71 \| good	21.566 \| good	0.714 \| good	19.581 \| good	0.317 \| good
2025-12-28T15:00:00.000Z	52 \| moderate	10.105 \| good	37.984 \| good	24.097 \| good	1.138 \| good	10.427 \| good	0.269 \| good
2025-12-28T16:00:00.000Z	54 \| moderate	11.483 \| good	55.602 \| fine	22.871 \| good	0.969 \| good	11.009 \| good	0.254 \| good
2025-12-28T17:00:00.000Z	52 \| moderate	10.325 \| good	21.462 \| good	32.694 \| good	1.569 \| good	7.911 \| good	0.235 \| good
2025-12-28T18:00:00.000Z	54 \| moderate	10.807 \| good	13.499 \| good	28.484 \| good	1.11 \| good	6.03 \| good	0.209 \| good
2025-12-28T19:00:00.000Z	44 \| good	8.288 \| good	29.644 \| good	32.358 \| good	1.104 \| good	8.513 \| good	0.209 \| good
2025-12-28T20:00:00.000Z	44 \| good	8.263 \| good	44.775 \| good	32.337 \| good	0.644 \| good	9.971 \| good	0.25 \| good
2025-12-28T21:00:00.000Z	72 \| moderate	11.721 \| good	97.275 \| fine	35.256 \| good	0.641 \| good	9.742 \| good	0.253 \| good
2025-12-28T22:00:00.000Z	49 \| good	9.499 \| good	42.409 \| good	19.903 \| good	0.659 \| good	9.487 \| good	0.222 \| good
2025-12-28T23:00:00.000Z	54 \| moderate	11.178 \| good	49.362 \| good	19.971 \| good	0.682 \| good	11.125 \| good	0.239 \| good
2025-12-29T00:00:00.000Z	60 \| moderate	13.536 \| fine	60.268 \| fine	13.543 \| good	0.705 \| good	12.762 \| good	0.256 \| good
2025-12-29T01:00:00.000Z	60 \| moderate	13.728 \| fine	62.159 \| fine	14.63 \| good	0.814 \| good	13.644 \| good	0.264 \| good
2025-12-29T02:00:00.000Z	58 \| moderate	13.07 \| fine	58.44 \| fine	12.622 \| good	0.923 \| good	14.527 \| good	0.272 \| good
2025-12-29T03:00:00.000Z	62 \| moderate	14.885 \| fine	66.337 \| fine	12.175 \| good	1.032 \| good	15.409 \| good	0.28 \| good
2025-12-29T04:00:00.000Z	64 \| moderate	16.342 \| fine	72.271 \| fine	8.417 \| good	1.036 \| good	15.016 \| good	0.273 \| good
2025-12-29T05:00:00.000Z	66 \| moderate	16.914 \| fine	75.791 \| fine	8.688 \| good	1.04 \| good	14.623 \| good	0.267 \| good
2025-12-29T06:00:00.000Z	67 \| moderate	17.571 \| fine	78.176 \| fine	9.334 \| good	1.044 \| good	14.229 \| good	0.26 \| good
2025-12-29T07:00:00.000Z	67 \| moderate	17.947 \| fine	78.739 \| fine	8.445 \| good	1.032 \| good	13.668 \| good	0.245 \| good
2025-12-29T08:00:00.000Z	64 \| moderate	16.276 \| fine	72.767 \| fine	10.827 \| good	1.02 \| good	13.106 \| good	0.23 \| good
2025-12-29T09:00:00.000Z	54 \| moderate	10.994 \| good	48.314 \| good	23.212 \| good	1.008 \| good	12.545 \| good	0.215 \| good
2025-12-29T10:00:00.000Z	44 \| good	8.188 \| good	36.116 \| good	26.809 \| good	0.747 \| good	9.335 \| good	0.194 \| good
2025-12-29T11:00:00.000Z	33 \| good	6.261 \| good	28.021 \| good	27.705 \| good	0.485 \| good	6.125 \| good	0.172 \| good
2025-12-29T12:00:00.000Z	27 \| good	4.76 \| good	21.028 \| good	28.083 \| good	0.224 \| good	2.915 \| good	0.151 \| good
2025-12-29T13:00:00.000Z	28 \| good	5.048 \| good	22.008 \| good	30.201 \| good	0.234 \| good	2.917 \| good	0.151 \| good
2025-12-29T14:00:00.000Z	38 \| good	6.561 \| good	29.081 \| good	29.705 \| good	0.243 \| good	2.92 \| good	0.151 \| good
2025-12-29T15:00:00.000Z	38 \| good	7.458 \| good	33.041 \| good	24.812 \| good	0.253 \| good	2.923 \| good	0.151 \| good
2025-12-29T16:00:00.000Z	44 \| good	8.337 \| good	36.922 \| good	20.025 \| good	0.339 \| good	4.224 \| good	0.16 \| good
2025-12-29T17:00:00.000Z	52 \| moderate	9.563 \| good	42.836 \| good	16.56 \| good	0.424 \| good	5.526 \| good	0.17 \| good
2025-12-29T18:00:00.000Z	52 \| moderate	10.387 \| good	45.843 \| good	14.758 \| good	0.51 \| good	6.828 \| good	0.179 \| good
2025-12-29T19:00:00.000Z	54 \| moderate	10.8 \| good	47.804 \| good	13.807 \| good	0.551 \| good	8.377 \| good	0.192 \| good
2025-12-29T20:00:00.000Z	54 \| moderate	11.169 \| good	49.622 \| good	12.24 \| good	0.591 \| good	9.927 \| good	0.205 \| good
2025-12-29T21:00:00.000Z	58 \| moderate	13.286 \| fine	60.441 \| fine	9.102 \| good	0.632 \| good	11.476 \| good	0.219 \| good
2025-12-29T22:00:00.000Z	56 \| moderate	12.272 \| fine	54.683 \| good	20.466 \| good	0.721 \| good	11.643 \| good	0.222 \| good
2025-12-29T23:00:00.000Z	52 \| moderate	10.323 \| good	45.739 \| good	26.33 \| good	0.811 \| good	11.811 \| good	0.226 \| good
2025-12-30T00:00:00.000Z	54 \| moderate	10.744 \| good	47.777 \| good	26.44 \| good	0.9 \| good	11.978 \| good	0.229 \| good
2025-12-30T01:00:00.000Z	49 \| good	9.247 \| good	41.081 \| good	26.268 \| good	0.681 \| good	8.63 \| good	0.214 \| good
2025-12-30T02:00:00.000Z	38 \| good	6.648 \| good	29.913 \| good	20.675 \| good	0.461 \| good	5.282 \| good	0.199 \| good
2025-12-30T03:00:00.000Z	33 \| good	5.839 \| good	24.988 \| good	20.445 \| good	0.242 \| good	1.934 \| good	0.184 \| good
2025-12-30T04:00:00.000Z	22 \| good	4.251 \| good	18.833 \| good	19.003 \| good	0.251 \| good	1.73 \| good	0.175 \| good
2025-12-30T05:00:00.000Z	22 \| good	3.636 \| good	16 \| good	20.341 \| good	0.259 \| good	1.526 \| good	0.166 \| good
2025-12-30T06:00:00.000Z	19 \| good	3.028 \| good	12.05 \| good	19.844 \| good	0.268 \| good	1.322 \| good	0.156 \| good
2025-12-30T07:00:00.000Z	19 \| good	2.191 \| good	8.98 \| good	20.207 \| good	0.253 \| good	1.181 \| good	0.151 \| good
2025-12-30T08:00:00.000Z	20 \| good	1.139 \| good	4.988 \| good	21.784 \| good	0.237 \| good	1.04 \| good	0.146 \| good
2025-12-30T09:00:00.000Z	21 \| good	0.889 \| good	3.08 \| good	22.77 \| good	0.222 \| good	0.899 \| good	0.14 \| good
2025-12-30T10:00:00.000Z	19 \| good	0.638 \| good	2.034 \| good	21.288 \| good	0.194 \| good	0.888 \| good	0.138 \| good
2025-12-30T11:00:00.000Z	19 \| good	0.67 \| good	2.093 \| good	20.133 \| good	0.166 \| good	0.877 \| good	0.137 \| good
2025-12-30T12:00:00.000Z	20 \| good	1.697 \| good	6.945 \| good	21.842 \| good	0.139 \| good	0.867 \| good	0.135 \| good
2025-12-30T13:00:00.000Z	23 \| good	2.031 \| good	8.04 \| good	24.76 \| good	0.133 \| good	0.738 \| good	0.135 \| good
2025-12-30T14:00:00.000Z	24 \| good	2.868 \| good	11.873 \| good	26.059 \| good	0.126 \| good	0.61 \| good	0.134 \| good
2025-12-30T15:00:00.000Z	25 \| good	2.871 \| good	11.9 \| good	26.954 \| good	0.12 \| good	0.481 \| good	0.134 \| good
2025-12-30T16:00:00.000Z	27 \| good	2.399 \| good	9.939 \| good	28.599 \| good	0.117 \| good	0.471 \| good	0.134 \| good
2025-12-30T17:00:00.000Z	27 \| good	2.618 \| good	10.88 \| good	28.672 \| good	0.114 \| good	0.46 \| good	0.133 \| good
2025-12-30T18:00:00.000Z	27 \| good	2.881 \| good	11.848 \| good	29.259 \| good	0.11 \| good	0.45 \| good	0.133 \| good
2025-12-30T19:00:00.000Z	26 \| good	2.523 \| good	10.013 \| good	28.268 \| good	0.112 \| good	0.623 \| good	0.134 \| good
2025-12-30T20:00:00.000Z	25 \| good	2.434 \| good	9.952 \| good	27.421 \| good	0.114 \| good	0.795 \| good	0.134 \| good
2025-12-30T21:00:00.000Z	25 \| good	2.744 \| good	11.031 \| good	26.833 \| good	0.116 \| good	0.968 \| good	0.135 \| good

Current air quality index in South Portland, Maine today

Common air pollutants in South Portland, Maine

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live South Portland, Maine air quality forecast and history

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near South Portland, Maine

Air quality in nearby cities

Portland, Maine

Scarborough, Maine

Westbrook, Maine

Falmouth, Maine

Gorham, Maine

Windham, Maine

How accurate is Maine, USA air quality data?

Air quality levels in US

Frequently asked questions

How frequently does the air quality data for South Portland, Maine get updated?

What time in the past 24 hours saw the poorest air quality in South Portland, Maine?

When was air quality in South Portland, Maine the best over the past 24 hours?

What is the air quality in South Portland, Maine right now?

What pollutant is most frequently found in South Portland, Maine?

What can I do if the air quality in South Portland, Maine is poor?

What is the PM2.5 concentration in South Portland, Maine right now?

What is the current level of PM10 in South Portland, Maine?

What is the current level of carbon monoxide (CO) in South Portland, Maine?

What is the current level of sulfur dioxide (SO2) in South Portland, Maine?

What is the current level of ozone (O3) in South Portland, Maine?

What is the current level of nitrogen dioxide (NO2) in South Portland, Maine?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 concentration in South Portland, Maine right now?

What is the current level of PM₁₀ in South Portland, Maine?

What is the current level of sulfur dioxide (SO₂) in South Portland, Maine?

What is the current level of ozone (O₃) in South Portland, Maine?

What is the current level of nitrogen dioxide (NO₂) in South Portland, Maine?