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

South Portland, Maine currently has a PM10 concentration of 38.208 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 0.307 ppb.

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

South Portland, Maine currently has an ozone (O3) concentration of 35.997 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 3.799 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 9.943 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)

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)

9.31 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

33.46 μg/m³

155

255

425

605+

Ozone (O₃)

35.04 ppb

201

201+

Sulfur Dioxide (SO₂)

0.30 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.08 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.20 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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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
2026-02-10T04:00:00.000Z	35 \| good	4.473 \| good	19.171 \| good	38.031 \| good	0.108 \| good	3.711 \| good	0.198 \| good
2026-02-10T05:00:00.000Z	34 \| good	4.377 \| good	16.127 \| good	37.073 \| good	0.109 \| good	5.109 \| good	0.217 \| good
2026-02-10T06:00:00.000Z	35 \| good	4.198 \| good	13.751 \| good	38.029 \| good	0.72 \| good	4.866 \| good	0.198 \| good
2026-02-10T07:00:00.000Z	35 \| good	4.191 \| good	13.261 \| good	38.027 \| good	0.72 \| good	4.864 \| good	0.198 \| good
2026-02-10T08:00:00.000Z	28 \| good	4.124 \| good	14.068 \| good	30.278 \| good	0.208 \| good	18.032 \| good	0.198 \| good
2026-02-10T09:00:00.000Z	27 \| good	5.43 \| good	20.362 \| good	23.563 \| good	0.307 \| good	25.973 \| good	0.236 \| good
2026-02-10T10:00:00.000Z	33 \| good	6.42 \| good	25.265 \| good	17.772 \| good	0.308 \| good	34.758 \| good	0.255 \| good
2026-02-10T11:00:00.000Z	44 \| good	8.346 \| good	36.176 \| good	15.848 \| good	0.406 \| good	35.319 \| good	0.314 \| good
2026-02-10T12:00:00.000Z	54 \| moderate	11.244 \| good	50.209 \| good	10.971 \| good	0.802 \| good	44.237 \| good	0.372 \| good
2026-02-10T13:00:00.000Z	54 \| moderate	11.302 \| good	50.745 \| good	10.968 \| good	0.802 \| good	44.317 \| good	0.372 \| good
2026-02-10T14:00:00.000Z	75 \| moderate	20.411 \| fine	103.527 \| fine	16.726 \| good	0.612 \| good	25.909 \| good	0.353 \| good
2026-02-10T15:00:00.000Z	76 \| moderate	20.444 \| fine	106.113 \| fine	23.454 \| good	0.308 \| good	15.456 \| good	0.257 \| good
2026-02-10T16:00:00.000Z	62 \| moderate	14.603 \| fine	75.666 \| fine	25.379 \| good	0.309 \| good	12.853 \| good	0.325 \| good
2026-02-10T17:00:00.000Z	54 \| moderate	11.148 \| good	55.929 \| fine	27.333 \| good	0.308 \| good	9.282 \| good	0.287 \| good
2026-02-10T18:00:00.000Z	54 \| moderate	11.342 \| good	55.807 \| fine	30.254 \| good	0.407 \| good	8.878 \| good	0.227 \| good
2026-02-10T19:00:00.000Z	49 \| good	8.863 \| good	37.103 \| good	34.128 \| good	0.503 \| good	4.612 \| good	0.256 \| good
2026-02-10T20:00:00.000Z	44 \| good	8.278 \| good	38.323 \| good	36.081 \| good	0.207 \| good	4.03 \| good	0.335 \| good
2026-02-10T21:00:00.000Z	38 \| good	7.042 \| good	34.852 \| good	37.035 \| good	0.108 \| good	2.931 \| good	0.315 \| good
2026-02-10T22:00:00.000Z	49 \| good	9.042 \| good	50.704 \| good	36.075 \| good	0.207 \| good	5.818 \| good	0.376 \| good
2026-02-10T23:00:00.000Z	54 \| moderate	10.912 \| good	59.816 \| fine	35.158 \| good	0.208 \| good	8.782 \| good	0.315 \| good
2026-02-11T00:00:00.000Z	54 \| moderate	10.897 \| good	58.037 \| fine	33.195 \| good	0.603 \| good	9.995 \| good	0.253 \| good
2026-02-11T01:00:00.000Z	56 \| moderate	12.006 \| good	60.638 \| fine	29.235 \| good	0.999 \| good	15.005 \| good	0.294 \| good
2026-02-11T02:00:00.000Z	52 \| moderate	10.475 \| good	47.153 \| good	30.272 \| good	0.306 \| good	11.009 \| good	0.258 \| good
2026-02-11T03:00:00.000Z	54 \| moderate	10.505 \| good	32.453 \| good	27.363 \| good	0.208 \| good	17.486 \| good	0.238 \| good
2026-02-11T04:00:00.000Z	54 \| moderate	10.629 \| good	32.836 \| good	27.367 \| good	0.207 \| good	17.464 \| good	0.258 \| good
2026-02-11T05:00:00.000Z	33 \| good	6.307 \| good	14.655 \| good	35.115 \| good	0.208 \| good	5.89 \| good	0.258 \| good
2026-02-11T06:00:00.000Z	33 \| good	6.42 \| good	11.346 \| good	34.152 \| good	0.208 \| good	5.33 \| good	0.258 \| good
2026-02-11T07:00:00.000Z	33 \| good	6.43 \| good	12.205 \| good	34.146 \| good	0.208 \| good	5.324 \| good	0.258 \| good
2026-02-11T08:00:00.000Z	44 \| good	8.006 \| good	12.473 \| good	30.313 \| good	0.306 \| good	8.492 \| good	0.258 \| good
2026-02-11T09:00:00.000Z	49 \| good	9.045 \| good	13.536 \| good	29.274 \| good	0.306 \| good	12.941 \| good	0.274 \| good
2026-02-11T10:00:00.000Z	54 \| moderate	10.878 \| good	18.582 \| good	29.271 \| good	0.306 \| good	14.443 \| good	0.279 \| good
2026-02-11T11:00:00.000Z	62 \| moderate	14.993 \| fine	31.071 \| good	29.153 \| good	0.404 \| good	15.309 \| good	0.279 \| good
2026-02-11T12:00:00.000Z	69 \| moderate	19.062 \| fine	42.954 \| good	28.152 \| good	0.305 \| good	14.435 \| good	0.315 \| good
2026-02-11T13:00:00.000Z	69 \| moderate	19.103 \| fine	42.437 \| good	28.161 \| good	0.305 \| good	14.32 \| good	0.315 \| good
2026-02-11T14:00:00.000Z	71 \| moderate	20.042 \| fine	46.289 \| good	27.046 \| good	0.405 \| good	12.59 \| good	0.335 \| good
2026-02-11T15:00:00.000Z	67 \| moderate	17.561 \| fine	42.211 \| good	26.133 \| good	0.506 \| good	10.513 \| good	0.335 \| good
2026-02-11T16:00:00.000Z	58 \| moderate	13.42 \| fine	34.922 \| good	30.001 \| good	0.407 \| good	5.44 \| good	0.26 \| good
2026-02-11T17:00:00.000Z	54 \| moderate	11.233 \| good	41.953 \| good	30.003 \| good	0.406 \| good	5.29 \| good	0.242 \| good
2026-02-11T18:00:00.000Z	52 \| moderate	10.128 \| good	40.452 \| good	32.958 \| good	0.306 \| good	5.217 \| good	0.22 \| good
2026-02-11T19:00:00.000Z	52 \| moderate	9.8 \| good	43.342 \| good	32.961 \| good	0.405 \| good	6.355 \| good	0.22 \| good
2026-02-11T20:00:00.000Z	52 \| moderate	9.981 \| good	45.658 \| good	32.044 \| good	0.306 \| good	5.076 \| good	0.22 \| good
2026-02-11T21:00:00.000Z	52 \| moderate	9.999 \| good	46.222 \| good	33.003 \| good	0.306 \| good	5.281 \| good	0.22 \| good
2026-02-11T22:00:00.000Z	54 \| moderate	11.08 \| good	56.91 \| fine	32.043 \| good	0.405 \| good	6.966 \| good	0.219 \| good
2026-02-11T23:00:00.000Z	58 \| moderate	12.662 \| fine	60.869 \| fine	31.043 \| good	0.503 \| good	9.829 \| good	0.219 \| good
2026-02-12T00:00:00.000Z	58 \| moderate	12.631 \| fine	57.75 \| fine	31.001 \| good	0.405 \| good	10.506 \| good	0.219 \| good
2026-02-12T01:00:00.000Z	54 \| moderate	11.333 \| good	45.748 \| good	33.997 \| good	0.405 \| good	4.879 \| good	0.219 \| good
2026-02-12T02:00:00.000Z	52 \| moderate	9.943 \| good	38.208 \| good	35.997 \| good	0.307 \| good	3.799 \| good	0.219 \| good
2026-02-12T03:00:00.000Z	49 \| good	9.306 \| good	33.46 \| good	35.043 \| good	0.305 \| good	4.077 \| good	0.2 \| good
2026-02-12T03:00:00.000Z	49 \| good	9.306 \| good	33.46 \| good	35.043 \| good	0.305 \| good	4.077 \| good	0.2 \| good
2026-02-12T03:00:00.000Z	107 \| sensitive	37.888 \| moderate	166.701 \| moderate	35.165 \| good	0.816 \| good	3.416 \| good	0.2 \| good
2026-02-12T04:00:00.000Z	105 \| sensitive	36.638 \| moderate	160.691 \| moderate	34.911 \| good	0.75 \| good	3.302 \| good	0.197 \| good
2026-02-12T05:00:00.000Z	99 \| moderate	35.064 \| fine	151.252 \| fine	34.471 \| good	0.683 \| good	3.188 \| good	0.195 \| good
2026-02-12T06:00:00.000Z	99 \| moderate	34.797 \| fine	150.859 \| fine	33.275 \| good	0.617 \| good	3.074 \| good	0.193 \| good
2026-02-12T07:00:00.000Z	82 \| moderate	25.794 \| fine	112.718 \| fine	30.793 \| good	0.553 \| good	2.668 \| good	0.188 \| good
2026-02-12T08:00:00.000Z	79 \| moderate	24.44 \| fine	106.575 \| fine	28.734 \| good	0.49 \| good	2.263 \| good	0.184 \| good
2026-02-12T09:00:00.000Z	82 \| moderate	25.997 \| fine	112.618 \| fine	29.389 \| good	0.427 \| good	1.857 \| good	0.179 \| good
2026-02-12T10:00:00.000Z	97 \| moderate	33.936 \| fine	146.459 \| fine	27.008 \| good	0.393 \| good	1.803 \| good	0.177 \| good
2026-02-12T11:00:00.000Z	102 \| sensitive	36.357 \| moderate	158.484 \| moderate	26.293 \| good	0.359 \| good	1.75 \| good	0.175 \| good
2026-02-12T12:00:00.000Z	94 \| moderate	32.329 \| fine	140.226 \| fine	28.356 \| good	0.326 \| good	1.696 \| good	0.173 \| good
2026-02-12T13:00:00.000Z	92 \| moderate	31 \| fine	134.337 \| fine	31.49 \| good	0.317 \| good	1.446 \| good	0.171 \| good
2026-02-12T14:00:00.000Z	88 \| moderate	28.726 \| fine	124.582 \| fine	34.84 \| good	0.309 \| good	1.196 \| good	0.168 \| good
2026-02-12T15:00:00.000Z	71 \| moderate	20.386 \| fine	89.03 \| fine	33.136 \| good	0.301 \| good	0.945 \| good	0.166 \| good
2026-02-12T16:00:00.000Z	58 \| moderate	13.081 \| fine	58.911 \| fine	36.213 \| good	0.258 \| good	0.793 \| good	0.16 \| good
2026-02-12T17:00:00.000Z	58 \| moderate	12.795 \| fine	57 \| fine	38.231 \| good	0.216 \| good	0.641 \| good	0.153 \| good
2026-02-12T18:00:00.000Z	52 \| moderate	10.392 \| good	46.01 \| good	36.871 \| good	0.173 \| good	0.488 \| good	0.147 \| good
2026-02-12T19:00:00.000Z	38 \| good	7.299 \| good	32.001 \| good	37.383 \| good	0.178 \| good	0.721 \| good	0.148 \| good
2026-02-12T20:00:00.000Z	36 \| good	6.29 \| good	27.87 \| good	38.897 \| good	0.184 \| good	0.953 \| good	0.148 \| good
2026-02-12T21:00:00.000Z	36 \| good	5.401 \| good	23.2 \| good	38.737 \| good	0.189 \| good	1.185 \| good	0.149 \| good
2026-02-12T22:00:00.000Z	44 \| good	8.217 \| good	36.091 \| good	36.481 \| good	0.212 \| good	1.645 \| good	0.152 \| good
2026-02-12T23:00:00.000Z	49 \| good	8.928 \| good	39.093 \| good	32.392 \| good	0.235 \| good	2.104 \| good	0.155 \| good
2026-02-13T00:00:00.000Z	49 \| good	9.279 \| good	41.069 \| good	32.778 \| good	0.259 \| good	2.564 \| good	0.158 \| good
2026-02-13T01:00:00.000Z	49 \| good	8.882 \| good	38.912 \| good	29.964 \| good	0.321 \| good	2.586 \| good	0.159 \| good
2026-02-13T02:00:00.000Z	44 \| good	8.011 \| good	34.861 \| good	27.956 \| good	0.383 \| good	2.608 \| good	0.159 \| good
2026-02-13T03:00:00.000Z	49 \| good	9.035 \| good	40.436 \| good	27.55 \| good	0.446 \| good	2.631 \| good	0.16 \| good
2026-02-13T04:00:00.000Z	52 \| moderate	10.216 \| good	45.508 \| good	25.719 \| good	0.422 \| good	2.521 \| good	0.159 \| good
2026-02-13T05:00:00.000Z	52 \| moderate	10.226 \| good	45.529 \| good	26.857 \| good	0.398 \| good	2.41 \| good	0.158 \| good
2026-02-13T06:00:00.000Z	37 \| good	4.329 \| good	4.688 \| good	40.488 \| good	0.373 \| good	2.289 \| good	0.157 \| good
2026-02-13T07:00:00.000Z	54 \| moderate	10.809 \| good	47.733 \| good	19.435 \| good	0.352 \| good	2.227 \| good	0.157 \| good
2026-02-13T08:00:00.000Z	52 \| moderate	10.42 \| good	46.448 \| good	20.435 \| good	0.331 \| good	2.153 \| good	0.158 \| good
2026-02-13T09:00:00.000Z	52 \| moderate	9.754 \| good	43.475 \| good	20.612 \| good	0.31 \| good	2.08 \| good	0.158 \| good
2026-02-13T10:00:00.000Z	38 \| good	7.445 \| good	32.745 \| good	21.838 \| good	0.311 \| good	2.418 \| good	0.161 \| good
2026-02-13T11:00:00.000Z	44 \| good	7.658 \| good	33.701 \| good	21.645 \| good	0.311 \| good	2.756 \| good	0.164 \| good
2026-02-13T12:00:00.000Z	34 \| good	4.942 \| good	5.277 \| good	36.931 \| good	0.312 \| good	3.068 \| good	0.167 \| good
2026-02-13T13:00:00.000Z	35 \| good	5.274 \| good	5.615 \| good	38.069 \| good	0.333 \| good	2.675 \| good	0.164 \| good
2026-02-13T14:00:00.000Z	36 \| good	4.894 \| good	5.219 \| good	39.206 \| good	0.355 \| good	2.282 \| good	0.162 \| good
2026-02-13T15:00:00.000Z	37 \| good	3.749 \| good	4.037 \| good	40.344 \| good	0.377 \| good	1.89 \| good	0.159 \| good
2026-02-13T16:00:00.000Z	33 \| good	6.337 \| good	28.083 \| good	36.256 \| good	0.37 \| good	1.625 \| good	0.155 \| good
2026-02-13T17:00:00.000Z	34 \| good	5.779 \| good	25.093 \| good	36.815 \| good	0.36 \| good	1.353 \| good	0.151 \| good
2026-02-13T18:00:00.000Z	40 \| good	1.933 \| good	2.213 \| good	43.445 \| good	0.349 \| good	1.082 \| good	0.146 \| good
2026-02-13T19:00:00.000Z	40 \| good	1.679 \| good	1.973 \| good	43.436 \| good	0.328 \| good	1.237 \| good	0.147 \| good
2026-02-13T20:00:00.000Z	40 \| good	1.553 \| good	1.855 \| good	43.427 \| good	0.306 \| good	1.392 \| good	0.147 \| good
2026-02-13T21:00:00.000Z	40 \| good	1.693 \| good	1.991 \| good	43.417 \| good	0.285 \| good	1.547 \| good	0.148 \| good
2026-02-13T22:00:00.000Z	39 \| good	2.468 \| good	2.775 \| good	41.633 \| good	0.284 \| good	2.711 \| good	0.16 \| good
2026-02-13T23:00:00.000Z	37 \| good	3.525 \| good	3.847 \| good	39.849 \| good	0.283 \| good	3.875 \| good	0.172 \| good
2026-02-14T00:00:00.000Z	35 \| good	3.847 \| good	4.168 \| good	38.065 \| good	0.282 \| good	5.039 \| good	0.185 \| good
2026-02-14T01:00:00.000Z	38 \| good	7.421 \| good	32.835 \| good	27.813 \| good	0.301 \| good	4.921 \| good	0.187 \| good
2026-02-14T02:00:00.000Z	34 \| good	4.655 \| good	4.955 \| good	37.424 \| good	0.318 \| good	4.736 \| good	0.188 \| good

South Portland

Empower business decisions with accurate air quality data

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

0.22ppm

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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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 02:00:00, 2026-02-11.

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 07:00:00 on 2026-02-11.

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 52.

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 9.943 μg/m³.

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

South Portland, Maine currently has a PM₁₀ concentration of 38.208 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 0.219 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 0.307 ppb.

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

South Portland, Maine currently has an ozone (O₃) concentration of 35.997 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 3.799 ppb.

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