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

South Portland, Maine currently has a PM10 concentration of 16.587 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 0.502 ppb.

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

South Portland, Maine currently has an ozone (O3) concentration of 23.95 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 3.827 ppb.

Current air quality index in South Portland, Maine today

Name: Live air pollution levels in South Portland, Maine today
Creator: Ambee

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)

Good

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)

4.33 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

14.87 μg/m³

155

255

425

605+

Ozone (O₃)

26.16 ppb

201

201+

Sulfur Dioxide (SO₂)

0.55 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.86 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.18 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

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
2025-09-13T23:00:00.000Z	28 \| good	4.195 \| good	10.22 \| good	30.066 \| good	0.458 \| good	2.851 \| good	0.182 \| good
2025-09-14T00:00:00.000Z	28 \| good	4.101 \| good	10.51 \| good	30.338 \| good	0.444 \| good	3.211 \| good	0.218 \| good
2025-09-14T01:00:00.000Z	28 \| good	4.206 \| good	10.383 \| good	29.828 \| good	0.474 \| good	3.356 \| good	0.203 \| good
2025-09-14T02:00:00.000Z	27 \| good	4.576 \| good	10.426 \| good	27.509 \| good	0.457 \| good	3.359 \| good	0.203 \| good
2025-09-14T03:00:00.000Z	33 \| good	6.482 \| good	28.935 \| good	18.522 \| good	0.377 \| good	2.533 \| good	0.15 \| good
2025-09-14T04:00:00.000Z	27 \| good	4.875 \| good	11.057 \| good	20.838 \| good	0.474 \| good	3.806 \| good	0.245 \| good
2025-09-14T05:00:00.000Z	27 \| good	5.061 \| good	11.206 \| good	18.819 \| good	0.418 \| good	6.153 \| good	0.203 \| good
2025-09-14T06:00:00.000Z	27 \| good	5.261 \| good	11.07 \| good	14.209 \| good	0.422 \| good	3.864 \| good	0.203 \| good
2025-09-14T07:00:00.000Z	27 \| good	5.357 \| good	11.443 \| good	13.422 \| good	0.426 \| good	4.583 \| good	0.224 \| good
2025-09-14T08:00:00.000Z	33 \| good	5.633 \| good	11.399 \| good	13.069 \| good	0.462 \| good	5.445 \| good	0.224 \| good
2025-09-14T09:00:00.000Z	33 \| good	5.998 \| good	12.532 \| good	17.64 \| good	0.426 \| good	3.073 \| good	0.203 \| good
2025-09-14T10:00:00.000Z	33 \| good	6.008 \| good	11.171 \| good	11.951 \| good	0.426 \| good	4.672 \| good	0.179 \| good
2025-09-14T11:00:00.000Z	33 \| good	5.845 \| good	11.01 \| good	13.701 \| good	0.447 \| good	4.131 \| good	0.18 \| good
2025-09-14T12:00:00.000Z	33 \| good	5.653 \| good	11.848 \| good	14.395 \| good	0.483 \| good	6.774 \| good	0.2 \| good
2025-09-14T13:00:00.000Z	33 \| good	5.581 \| good	11.29 \| good	12.981 \| good	0.738 \| good	6.111 \| good	0.282 \| good
2025-09-14T14:00:00.000Z	27 \| good	5.173 \| good	10.524 \| good	15.729 \| good	0.582 \| good	4.888 \| good	0.24 \| good
2025-09-14T15:00:00.000Z	27 \| good	5.122 \| good	10.684 \| good	20.237 \| good	0.532 \| good	2.987 \| good	0.242 \| good
2025-09-14T16:00:00.000Z	27 \| good	5.19 \| good	10.941 \| good	22.902 \| good	0.582 \| good	3.14 \| good	0.203 \| good
2025-09-14T17:00:00.000Z	27 \| good	5.363 \| good	12.192 \| good	24.161 \| good	0.582 \| good	2.522 \| good	0.182 \| good
2025-09-14T18:00:00.000Z	33 \| good	5.57 \| good	12.708 \| good	26.651 \| good	0.509 \| good	2.413 \| good	0.203 \| good
2025-09-14T19:00:00.000Z	33 \| good	5.715 \| good	12.74 \| good	31.741 \| good	0.526 \| good	2.907 \| good	0.221 \| good
2025-09-14T20:00:00.000Z	33 \| good	6.013 \| good	12.276 \| good	32.568 \| good	0.526 \| good	3.266 \| good	0.237 \| good
2025-09-14T21:00:00.000Z	33 \| good	6.335 \| good	14.594 \| good	32.726 \| good	0.507 \| good	2.898 \| good	0.219 \| good
2025-09-14T22:00:00.000Z	38 \| good	6.653 \| good	15.311 \| good	35.352 \| good	0.492 \| good	1.22 \| good	0.237 \| good
2025-09-14T23:00:00.000Z	38 \| good	6.647 \| good	15.436 \| good	33.582 \| good	0.554 \| good	3.242 \| good	0.198 \| good
2025-09-15T00:00:00.000Z	38 \| good	7.032 \| good	16.532 \| good	30.819 \| good	0.526 \| good	4.486 \| good	0.271 \| good
2025-09-15T01:00:00.000Z	38 \| good	7.204 \| good	16.396 \| good	28.791 \| good	0.503 \| good	2.44 \| good	0.308 \| good
2025-09-15T02:00:00.000Z	38 \| good	7.352 \| good	17.96 \| good	23.348 \| good	0.516 \| good	2.904 \| good	0.388 \| good
2025-09-15T03:00:00.000Z	44 \| good	8.036 \| good	17.894 \| good	19.126 \| good	0.505 \| good	3.921 \| good	0.478 \| good
2025-09-15T04:00:00.000Z	49 \| good	8.803 \| good	17.132 \| good	16.503 \| good	0.499 \| good	4.058 \| good	0.489 \| good
2025-09-15T05:00:00.000Z	52 \| moderate	10.4 \| good	18.361 \| good	13.725 \| good	0.476 \| good	3.511 \| good	0.483 \| good
2025-09-15T06:00:00.000Z	49 \| good	9.171 \| good	16.908 \| good	9.565 \| good	0.507 \| good	2.743 \| good	0.404 \| good
2025-09-15T07:00:00.000Z	49 \| good	8.505 \| good	14.427 \| good	10.126 \| good	0.505 \| good	2.144 \| good	0.383 \| good
2025-09-15T08:00:00.000Z	44 \| good	8.02 \| good	15.061 \| good	13.503 \| good	0.584 \| good	1.535 \| good	0.367 \| good
2025-09-15T09:00:00.000Z	38 \| good	7.031 \| good	11.639 \| good	11.08 \| good	0.583 \| good	2.047 \| good	0.303 \| good
2025-09-15T10:00:00.000Z	33 \| good	6.361 \| good	11.186 \| good	11.997 \| good	0.503 \| good	1.563 \| good	0.303 \| good
2025-09-15T11:00:00.000Z	33 \| good	6.224 \| good	10.856 \| good	9.105 \| good	0.517 \| good	2.257 \| good	0.298 \| good
2025-09-15T12:00:00.000Z	33 \| good	6.164 \| good	12.075 \| good	14.745 \| good	0.552 \| good	3.971 \| good	0.277 \| good
2025-09-15T13:00:00.000Z	33 \| good	5.771 \| good	14.265 \| good	15.561 \| good	0.551 \| good	6.883 \| good	0.271 \| good
2025-09-15T14:00:00.000Z	33 \| good	5.572 \| good	18.734 \| good	15.838 \| good	0.568 \| good	4.66 \| good	0.244 \| good
2025-09-15T15:00:00.000Z	33 \| good	5.558 \| good	24.737 \| good	17.143 \| good	0.518 \| good	3.591 \| good	0.256 \| good
2025-09-15T16:00:00.000Z	33 \| good	5.594 \| good	28.443 \| good	18.834 \| good	0.48 \| good	5.023 \| good	0.182 \| good
2025-09-15T17:00:00.000Z	27 \| good	5.061 \| good	21.012 \| good	20.709 \| good	0.468 \| good	5.193 \| good	0.18 \| good
2025-09-15T18:00:00.000Z	27 \| good	4.669 \| good	16.609 \| good	21.939 \| good	0.484 \| good	4.467 \| good	0.18 \| good
2025-09-15T19:00:00.000Z	22 \| good	4.48 \| good	16.82 \| good	23.302 \| good	0.515 \| good	4.045 \| good	0.181 \| good
2025-09-15T20:00:00.000Z	22 \| good	4.453 \| good	16.271 \| good	24.049 \| good	0.501 \| good	3.827 \| good	0.181 \| good
2025-09-15T21:00:00.000Z	25 \| good	4.316 \| good	14.895 \| good	26.603 \| good	0.552 \| good	4.859 \| good	0.176 \| good
2025-09-15T22:00:00.000Z	24 \| good	4.334 \| good	14.869 \| good	26.16 \| good	0.552 \| good	4.857 \| good	0.176 \| good
2025-09-15T22:00:00.000Z	21 \| good	3.025 \| good	12.093 \| good	23.273 \| good	0.221 \| good	1.893 \| good	0.171 \| good
2025-09-15T23:00:00.000Z	22 \| good	3.986 \| good	17.742 \| good	21.563 \| good	0.221 \| good	2.637 \| good	0.176 \| good
2025-09-16T00:00:00.000Z	27 \| good	5.146 \| good	22.501 \| good	17.012 \| good	0.22 \| good	3.381 \| good	0.181 \| good
2025-09-16T01:00:00.000Z	49 \| good	9.246 \| good	40.968 \| good	16.362 \| good	0.246 \| good	3.71 \| good	0.184 \| good
2025-09-16T02:00:00.000Z	49 \| good	8.767 \| good	38.756 \| good	14.621 \| good	0.272 \| good	4.039 \| good	0.187 \| good
2025-09-16T03:00:00.000Z	52 \| moderate	10.146 \| good	44.929 \| good	10.901 \| good	0.298 \| good	4.368 \| good	0.191 \| good
2025-09-16T04:00:00.000Z	49 \| good	8.765 \| good	38.617 \| good	8.411 \| good	0.315 \| good	4.352 \| good	0.193 \| good
2025-09-16T05:00:00.000Z	33 \| good	6.406 \| good	28.755 \| good	8.364 \| good	0.331 \| good	4.336 \| good	0.195 \| good
2025-09-16T06:00:00.000Z	33 \| good	6.154 \| good	27.021 \| good	7.713 \| good	0.347 \| good	4.321 \| good	0.197 \| good
2025-09-16T07:00:00.000Z	38 \| good	7.485 \| good	32.879 \| good	6.548 \| good	0.36 \| good	4.194 \| good	0.197 \| good
2025-09-16T08:00:00.000Z	44 \| good	7.778 \| good	33.879 \| good	6.905 \| good	0.372 \| good	4.067 \| good	0.198 \| good
2025-09-16T09:00:00.000Z	33 \| good	6.3 \| good	28.084 \| good	5.029 \| good	0.384 \| good	3.94 \| good	0.199 \| good
2025-09-16T10:00:00.000Z	27 \| good	4.899 \| good	20.978 \| good	3.069 \| good	0.4 \| good	4.134 \| good	0.208 \| good
2025-09-16T11:00:00.000Z	27 \| good	4.523 \| good	19.753 \| good	3.573 \| good	0.416 \| good	4.327 \| good	0.216 \| good
2025-09-16T12:00:00.000Z	27 \| good	5.439 \| good	23.186 \| good	10.62 \| good	0.432 \| good	4.52 \| good	0.225 \| good
2025-09-16T13:00:00.000Z	27 \| good	5.497 \| good	23.492 \| good	16.689 \| good	0.491 \| good	3.589 \| good	0.213 \| good
2025-09-16T14:00:00.000Z	33 \| good	5.908 \| good	25.689 \| good	22.51 \| good	0.549 \| good	2.658 \| good	0.202 \| good
2025-09-16T15:00:00.000Z	33 \| good	5.805 \| good	25.539 \| good	23.641 \| good	0.608 \| good	1.726 \| good	0.19 \| good
2025-09-16T16:00:00.000Z	33 \| good	6.35 \| good	28.137 \| good	24.488 \| good	0.535 \| good	1.429 \| good	0.185 \| good
2025-09-16T17:00:00.000Z	38 \| good	6.894 \| good	30.832 \| good	27.67 \| good	0.461 \| good	1.132 \| good	0.18 \| good
2025-09-16T18:00:00.000Z	33 \| good	5.571 \| good	23.684 \| good	29.035 \| good	0.388 \| good	0.834 \| good	0.176 \| good
2025-09-16T19:00:00.000Z	26 \| good	3.503 \| good	15.318 \| good	28.343 \| good	0.369 \| good	0.986 \| good	0.174 \| good
2025-09-16T20:00:00.000Z	23 \| good	3.159 \| good	13.652 \| good	24.535 \| good	0.349 \| good	1.137 \| good	0.173 \| good
2025-09-16T21:00:00.000Z	22 \| good	3.239 \| good	13.742 \| good	23.854 \| good	0.33 \| good	1.289 \| good	0.172 \| good
2025-09-16T22:00:00.000Z	27 \| good	5.017 \| good	21.81 \| good	26.281 \| good	0.323 \| good	2.248 \| good	0.179 \| good
2025-09-16T23:00:00.000Z	22 \| good	4.298 \| good	18.79 \| good	23.124 \| good	0.316 \| good	3.208 \| good	0.185 \| good
2025-09-17T00:00:00.000Z	22 \| good	3.281 \| good	14.455 \| good	23.657 \| good	0.309 \| good	4.167 \| good	0.192 \| good
2025-09-17T01:00:00.000Z	27 \| good	4.924 \| good	20.975 \| good	20.61 \| good	0.318 \| good	4.268 \| good	0.192 \| good
2025-09-17T02:00:00.000Z	27 \| good	5.111 \| good	21.917 \| good	16.159 \| good	0.328 \| good	4.37 \| good	0.193 \| good
2025-09-17T03:00:00.000Z	27 \| good	4.861 \| good	20.867 \| good	15.989 \| good	0.337 \| good	4.471 \| good	0.193 \| good
2025-09-17T04:00:00.000Z	22 \| good	4.156 \| good	18.199 \| good	11.573 \| good	0.337 \| good	4.485 \| good	0.194 \| good
2025-09-17T05:00:00.000Z	16 \| good	3.195 \| good	13.86 \| good	10.517 \| good	0.336 \| good	4.499 \| good	0.194 \| good
2025-09-17T06:00:00.000Z	22 \| good	3.927 \| good	16.966 \| good	9.212 \| good	0.336 \| good	4.514 \| good	0.195 \| good
2025-09-17T07:00:00.000Z	27 \| good	5.094 \| good	21.853 \| good	6.058 \| good	0.332 \| good	4.56 \| good	0.197 \| good
2025-09-17T08:00:00.000Z	27 \| good	5.093 \| good	22.037 \| good	7.648 \| good	0.327 \| good	4.606 \| good	0.199 \| good
2025-09-17T09:00:00.000Z	16 \| good	3.037 \| good	12.086 \| good	5.925 \| good	0.323 \| good	4.652 \| good	0.201 \| good
2025-09-17T10:00:00.000Z	22 \| good	3.921 \| good	16.949 \| good	4.837 \| good	0.269 \| good	5.266 \| good	0.218 \| good
2025-09-17T11:00:00.000Z	22 \| good	3.535 \| good	15.851 \| good	4.018 \| good	0.216 \| good	5.88 \| good	0.234 \| good
2025-09-17T12:00:00.000Z	22 \| good	3.662 \| good	15.978 \| good	10.461 \| good	0.162 \| good	6.493 \| good	0.251 \| good
2025-09-17T13:00:00.000Z	22 \| good	3.835 \| good	16.897 \| good	17.336 \| good	0.227 \| good	4.754 \| good	0.221 \| good
2025-09-17T14:00:00.000Z	22 \| good	4.012 \| good	17.43 \| good	21.478 \| good	0.292 \| good	3.015 \| good	0.191 \| good
2025-09-17T15:00:00.000Z	27 \| good	4.848 \| good	21.026 \| good	23.328 \| good	0.357 \| good	1.276 \| good	0.162 \| good
2025-09-17T16:00:00.000Z	24 \| good	4.107 \| good	18.004 \| good	25.834 \| good	0.341 \| good	1.032 \| good	0.157 \| good
2025-09-17T17:00:00.000Z	30 \| good	3.667 \| good	16.008 \| good	32.151 \| good	0.326 \| good	0.787 \| good	0.152 \| good
2025-09-17T18:00:00.000Z	32 \| good	2.728 \| good	10.892 \| good	34.926 \| good	0.31 \| good	0.543 \| good	0.147 \| good
2025-09-17T19:00:00.000Z	30 \| good	2.415 \| good	9.77 \| good	32.41 \| good	0.289 \| good	0.656 \| good	0.147 \| good
2025-09-17T20:00:00.000Z	27 \| good	1.91 \| good	7.954 \| good	29.33 \| good	0.268 \| good	0.77 \| good	0.146 \| good
2025-09-17T21:00:00.000Z	24 \| good	1.941 \| good	7.901 \| good	25.828 \| good	0.247 \| good	0.883 \| good	0.146 \| good

South Portland

Empower business decisions with accurate air quality data

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

0.18ppm

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 05:00:00, 2025-09-15.

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 2025-09-15.

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

The air quality in South Portland, Maine right now is Good, with an AQI of 27.

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

In South Portland, Maine, PM2.5 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 4.506 μg/m³.

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

South Portland, Maine currently has a PM₁₀ concentration of 16.587 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 0.181 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 0.502 ppb.

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

South Portland, Maine currently has an ozone (O₃) concentration of 23.95 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 3.827 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-13T23:00:00.000Z	28 \| good	4.195 \| good	10.22 \| good	30.066 \| good	0.458 \| good	2.851 \| good	0.182 \| good
2025-09-14T00:00:00.000Z	28 \| good	4.101 \| good	10.51 \| good	30.338 \| good	0.444 \| good	3.211 \| good	0.218 \| good
2025-09-14T01:00:00.000Z	28 \| good	4.206 \| good	10.383 \| good	29.828 \| good	0.474 \| good	3.356 \| good	0.203 \| good
2025-09-14T02:00:00.000Z	27 \| good	4.576 \| good	10.426 \| good	27.509 \| good	0.457 \| good	3.359 \| good	0.203 \| good
2025-09-14T03:00:00.000Z	33 \| good	6.482 \| good	28.935 \| good	18.522 \| good	0.377 \| good	2.533 \| good	0.15 \| good
2025-09-14T04:00:00.000Z	27 \| good	4.875 \| good	11.057 \| good	20.838 \| good	0.474 \| good	3.806 \| good	0.245 \| good
2025-09-14T05:00:00.000Z	27 \| good	5.061 \| good	11.206 \| good	18.819 \| good	0.418 \| good	6.153 \| good	0.203 \| good
2025-09-14T06:00:00.000Z	27 \| good	5.261 \| good	11.07 \| good	14.209 \| good	0.422 \| good	3.864 \| good	0.203 \| good
2025-09-14T07:00:00.000Z	27 \| good	5.357 \| good	11.443 \| good	13.422 \| good	0.426 \| good	4.583 \| good	0.224 \| good
2025-09-14T08:00:00.000Z	33 \| good	5.633 \| good	11.399 \| good	13.069 \| good	0.462 \| good	5.445 \| good	0.224 \| good
2025-09-14T09:00:00.000Z	33 \| good	5.998 \| good	12.532 \| good	17.64 \| good	0.426 \| good	3.073 \| good	0.203 \| good
2025-09-14T10:00:00.000Z	33 \| good	6.008 \| good	11.171 \| good	11.951 \| good	0.426 \| good	4.672 \| good	0.179 \| good
2025-09-14T11:00:00.000Z	33 \| good	5.845 \| good	11.01 \| good	13.701 \| good	0.447 \| good	4.131 \| good	0.18 \| good
2025-09-14T12:00:00.000Z	33 \| good	5.653 \| good	11.848 \| good	14.395 \| good	0.483 \| good	6.774 \| good	0.2 \| good
2025-09-14T13:00:00.000Z	33 \| good	5.581 \| good	11.29 \| good	12.981 \| good	0.738 \| good	6.111 \| good	0.282 \| good
2025-09-14T14:00:00.000Z	27 \| good	5.173 \| good	10.524 \| good	15.729 \| good	0.582 \| good	4.888 \| good	0.24 \| good
2025-09-14T15:00:00.000Z	27 \| good	5.122 \| good	10.684 \| good	20.237 \| good	0.532 \| good	2.987 \| good	0.242 \| good
2025-09-14T16:00:00.000Z	27 \| good	5.19 \| good	10.941 \| good	22.902 \| good	0.582 \| good	3.14 \| good	0.203 \| good
2025-09-14T17:00:00.000Z	27 \| good	5.363 \| good	12.192 \| good	24.161 \| good	0.582 \| good	2.522 \| good	0.182 \| good
2025-09-14T18:00:00.000Z	33 \| good	5.57 \| good	12.708 \| good	26.651 \| good	0.509 \| good	2.413 \| good	0.203 \| good
2025-09-14T19:00:00.000Z	33 \| good	5.715 \| good	12.74 \| good	31.741 \| good	0.526 \| good	2.907 \| good	0.221 \| good
2025-09-14T20:00:00.000Z	33 \| good	6.013 \| good	12.276 \| good	32.568 \| good	0.526 \| good	3.266 \| good	0.237 \| good
2025-09-14T21:00:00.000Z	33 \| good	6.335 \| good	14.594 \| good	32.726 \| good	0.507 \| good	2.898 \| good	0.219 \| good
2025-09-14T22:00:00.000Z	38 \| good	6.653 \| good	15.311 \| good	35.352 \| good	0.492 \| good	1.22 \| good	0.237 \| good
2025-09-14T23:00:00.000Z	38 \| good	6.647 \| good	15.436 \| good	33.582 \| good	0.554 \| good	3.242 \| good	0.198 \| good
2025-09-15T00:00:00.000Z	38 \| good	7.032 \| good	16.532 \| good	30.819 \| good	0.526 \| good	4.486 \| good	0.271 \| good
2025-09-15T01:00:00.000Z	38 \| good	7.204 \| good	16.396 \| good	28.791 \| good	0.503 \| good	2.44 \| good	0.308 \| good
2025-09-15T02:00:00.000Z	38 \| good	7.352 \| good	17.96 \| good	23.348 \| good	0.516 \| good	2.904 \| good	0.388 \| good
2025-09-15T03:00:00.000Z	44 \| good	8.036 \| good	17.894 \| good	19.126 \| good	0.505 \| good	3.921 \| good	0.478 \| good
2025-09-15T04:00:00.000Z	49 \| good	8.803 \| good	17.132 \| good	16.503 \| good	0.499 \| good	4.058 \| good	0.489 \| good
2025-09-15T05:00:00.000Z	52 \| moderate	10.4 \| good	18.361 \| good	13.725 \| good	0.476 \| good	3.511 \| good	0.483 \| good
2025-09-15T06:00:00.000Z	49 \| good	9.171 \| good	16.908 \| good	9.565 \| good	0.507 \| good	2.743 \| good	0.404 \| good
2025-09-15T07:00:00.000Z	49 \| good	8.505 \| good	14.427 \| good	10.126 \| good	0.505 \| good	2.144 \| good	0.383 \| good
2025-09-15T08:00:00.000Z	44 \| good	8.02 \| good	15.061 \| good	13.503 \| good	0.584 \| good	1.535 \| good	0.367 \| good
2025-09-15T09:00:00.000Z	38 \| good	7.031 \| good	11.639 \| good	11.08 \| good	0.583 \| good	2.047 \| good	0.303 \| good
2025-09-15T10:00:00.000Z	33 \| good	6.361 \| good	11.186 \| good	11.997 \| good	0.503 \| good	1.563 \| good	0.303 \| good
2025-09-15T11:00:00.000Z	33 \| good	6.224 \| good	10.856 \| good	9.105 \| good	0.517 \| good	2.257 \| good	0.298 \| good
2025-09-15T12:00:00.000Z	33 \| good	6.164 \| good	12.075 \| good	14.745 \| good	0.552 \| good	3.971 \| good	0.277 \| good
2025-09-15T13:00:00.000Z	33 \| good	5.771 \| good	14.265 \| good	15.561 \| good	0.551 \| good	6.883 \| good	0.271 \| good
2025-09-15T14:00:00.000Z	33 \| good	5.572 \| good	18.734 \| good	15.838 \| good	0.568 \| good	4.66 \| good	0.244 \| good
2025-09-15T15:00:00.000Z	33 \| good	5.558 \| good	24.737 \| good	17.143 \| good	0.518 \| good	3.591 \| good	0.256 \| good
2025-09-15T16:00:00.000Z	33 \| good	5.594 \| good	28.443 \| good	18.834 \| good	0.48 \| good	5.023 \| good	0.182 \| good
2025-09-15T17:00:00.000Z	27 \| good	5.061 \| good	21.012 \| good	20.709 \| good	0.468 \| good	5.193 \| good	0.18 \| good
2025-09-15T18:00:00.000Z	27 \| good	4.669 \| good	16.609 \| good	21.939 \| good	0.484 \| good	4.467 \| good	0.18 \| good
2025-09-15T19:00:00.000Z	22 \| good	4.48 \| good	16.82 \| good	23.302 \| good	0.515 \| good	4.045 \| good	0.181 \| good
2025-09-15T20:00:00.000Z	22 \| good	4.453 \| good	16.271 \| good	24.049 \| good	0.501 \| good	3.827 \| good	0.181 \| good
2025-09-15T21:00:00.000Z	25 \| good	4.316 \| good	14.895 \| good	26.603 \| good	0.552 \| good	4.859 \| good	0.176 \| good
2025-09-15T22:00:00.000Z	24 \| good	4.334 \| good	14.869 \| good	26.16 \| good	0.552 \| good	4.857 \| good	0.176 \| good
2025-09-15T22:00:00.000Z	21 \| good	3.025 \| good	12.093 \| good	23.273 \| good	0.221 \| good	1.893 \| good	0.171 \| good
2025-09-15T23:00:00.000Z	22 \| good	3.986 \| good	17.742 \| good	21.563 \| good	0.221 \| good	2.637 \| good	0.176 \| good
2025-09-16T00:00:00.000Z	27 \| good	5.146 \| good	22.501 \| good	17.012 \| good	0.22 \| good	3.381 \| good	0.181 \| good
2025-09-16T01:00:00.000Z	49 \| good	9.246 \| good	40.968 \| good	16.362 \| good	0.246 \| good	3.71 \| good	0.184 \| good
2025-09-16T02:00:00.000Z	49 \| good	8.767 \| good	38.756 \| good	14.621 \| good	0.272 \| good	4.039 \| good	0.187 \| good
2025-09-16T03:00:00.000Z	52 \| moderate	10.146 \| good	44.929 \| good	10.901 \| good	0.298 \| good	4.368 \| good	0.191 \| good
2025-09-16T04:00:00.000Z	49 \| good	8.765 \| good	38.617 \| good	8.411 \| good	0.315 \| good	4.352 \| good	0.193 \| good
2025-09-16T05:00:00.000Z	33 \| good	6.406 \| good	28.755 \| good	8.364 \| good	0.331 \| good	4.336 \| good	0.195 \| good
2025-09-16T06:00:00.000Z	33 \| good	6.154 \| good	27.021 \| good	7.713 \| good	0.347 \| good	4.321 \| good	0.197 \| good
2025-09-16T07:00:00.000Z	38 \| good	7.485 \| good	32.879 \| good	6.548 \| good	0.36 \| good	4.194 \| good	0.197 \| good
2025-09-16T08:00:00.000Z	44 \| good	7.778 \| good	33.879 \| good	6.905 \| good	0.372 \| good	4.067 \| good	0.198 \| good
2025-09-16T09:00:00.000Z	33 \| good	6.3 \| good	28.084 \| good	5.029 \| good	0.384 \| good	3.94 \| good	0.199 \| good
2025-09-16T10:00:00.000Z	27 \| good	4.899 \| good	20.978 \| good	3.069 \| good	0.4 \| good	4.134 \| good	0.208 \| good
2025-09-16T11:00:00.000Z	27 \| good	4.523 \| good	19.753 \| good	3.573 \| good	0.416 \| good	4.327 \| good	0.216 \| good
2025-09-16T12:00:00.000Z	27 \| good	5.439 \| good	23.186 \| good	10.62 \| good	0.432 \| good	4.52 \| good	0.225 \| good
2025-09-16T13:00:00.000Z	27 \| good	5.497 \| good	23.492 \| good	16.689 \| good	0.491 \| good	3.589 \| good	0.213 \| good
2025-09-16T14:00:00.000Z	33 \| good	5.908 \| good	25.689 \| good	22.51 \| good	0.549 \| good	2.658 \| good	0.202 \| good
2025-09-16T15:00:00.000Z	33 \| good	5.805 \| good	25.539 \| good	23.641 \| good	0.608 \| good	1.726 \| good	0.19 \| good
2025-09-16T16:00:00.000Z	33 \| good	6.35 \| good	28.137 \| good	24.488 \| good	0.535 \| good	1.429 \| good	0.185 \| good
2025-09-16T17:00:00.000Z	38 \| good	6.894 \| good	30.832 \| good	27.67 \| good	0.461 \| good	1.132 \| good	0.18 \| good
2025-09-16T18:00:00.000Z	33 \| good	5.571 \| good	23.684 \| good	29.035 \| good	0.388 \| good	0.834 \| good	0.176 \| good
2025-09-16T19:00:00.000Z	26 \| good	3.503 \| good	15.318 \| good	28.343 \| good	0.369 \| good	0.986 \| good	0.174 \| good
2025-09-16T20:00:00.000Z	23 \| good	3.159 \| good	13.652 \| good	24.535 \| good	0.349 \| good	1.137 \| good	0.173 \| good
2025-09-16T21:00:00.000Z	22 \| good	3.239 \| good	13.742 \| good	23.854 \| good	0.33 \| good	1.289 \| good	0.172 \| good
2025-09-16T22:00:00.000Z	27 \| good	5.017 \| good	21.81 \| good	26.281 \| good	0.323 \| good	2.248 \| good	0.179 \| good
2025-09-16T23:00:00.000Z	22 \| good	4.298 \| good	18.79 \| good	23.124 \| good	0.316 \| good	3.208 \| good	0.185 \| good
2025-09-17T00:00:00.000Z	22 \| good	3.281 \| good	14.455 \| good	23.657 \| good	0.309 \| good	4.167 \| good	0.192 \| good
2025-09-17T01:00:00.000Z	27 \| good	4.924 \| good	20.975 \| good	20.61 \| good	0.318 \| good	4.268 \| good	0.192 \| good
2025-09-17T02:00:00.000Z	27 \| good	5.111 \| good	21.917 \| good	16.159 \| good	0.328 \| good	4.37 \| good	0.193 \| good
2025-09-17T03:00:00.000Z	27 \| good	4.861 \| good	20.867 \| good	15.989 \| good	0.337 \| good	4.471 \| good	0.193 \| good
2025-09-17T04:00:00.000Z	22 \| good	4.156 \| good	18.199 \| good	11.573 \| good	0.337 \| good	4.485 \| good	0.194 \| good
2025-09-17T05:00:00.000Z	16 \| good	3.195 \| good	13.86 \| good	10.517 \| good	0.336 \| good	4.499 \| good	0.194 \| good
2025-09-17T06:00:00.000Z	22 \| good	3.927 \| good	16.966 \| good	9.212 \| good	0.336 \| good	4.514 \| good	0.195 \| good
2025-09-17T07:00:00.000Z	27 \| good	5.094 \| good	21.853 \| good	6.058 \| good	0.332 \| good	4.56 \| good	0.197 \| good
2025-09-17T08:00:00.000Z	27 \| good	5.093 \| good	22.037 \| good	7.648 \| good	0.327 \| good	4.606 \| good	0.199 \| good
2025-09-17T09:00:00.000Z	16 \| good	3.037 \| good	12.086 \| good	5.925 \| good	0.323 \| good	4.652 \| good	0.201 \| good
2025-09-17T10:00:00.000Z	22 \| good	3.921 \| good	16.949 \| good	4.837 \| good	0.269 \| good	5.266 \| good	0.218 \| good
2025-09-17T11:00:00.000Z	22 \| good	3.535 \| good	15.851 \| good	4.018 \| good	0.216 \| good	5.88 \| good	0.234 \| good
2025-09-17T12:00:00.000Z	22 \| good	3.662 \| good	15.978 \| good	10.461 \| good	0.162 \| good	6.493 \| good	0.251 \| good
2025-09-17T13:00:00.000Z	22 \| good	3.835 \| good	16.897 \| good	17.336 \| good	0.227 \| good	4.754 \| good	0.221 \| good
2025-09-17T14:00:00.000Z	22 \| good	4.012 \| good	17.43 \| good	21.478 \| good	0.292 \| good	3.015 \| good	0.191 \| good
2025-09-17T15:00:00.000Z	27 \| good	4.848 \| good	21.026 \| good	23.328 \| good	0.357 \| good	1.276 \| good	0.162 \| good
2025-09-17T16:00:00.000Z	24 \| good	4.107 \| good	18.004 \| good	25.834 \| good	0.341 \| good	1.032 \| good	0.157 \| good
2025-09-17T17:00:00.000Z	30 \| good	3.667 \| good	16.008 \| good	32.151 \| good	0.326 \| good	0.787 \| good	0.152 \| good
2025-09-17T18:00:00.000Z	32 \| good	2.728 \| good	10.892 \| good	34.926 \| good	0.31 \| good	0.543 \| good	0.147 \| good
2025-09-17T19:00:00.000Z	30 \| good	2.415 \| good	9.77 \| good	32.41 \| good	0.289 \| good	0.656 \| good	0.147 \| good
2025-09-17T20:00:00.000Z	27 \| good	1.91 \| good	7.954 \| good	29.33 \| good	0.268 \| good	0.77 \| good	0.146 \| good
2025-09-17T21:00:00.000Z	24 \| good	1.941 \| good	7.901 \| good	25.828 \| good	0.247 \| good	0.883 \| good	0.146 \| 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?