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

South Portland, Maine currently has a PM10 concentration of 20.212 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 0.11 ppb.

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

South Portland, Maine currently has an ozone (O3) concentration of 25.988 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 3.68 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 9.762 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)

9.76 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

20.21 μg/m³

155

255

425

605+

Ozone (O₃)

25.99 ppb

201

201+

Sulfur Dioxide (SO₂)

0.11 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.68 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.12 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
2026-06-27T19:00:00.000Z	44 \| good	7.688 \| good	18.289 \| good	26.186 \| good	0.55 \| good	4.388 \| good	0.137 \| good
2026-06-27T20:00:00.000Z	38 \| good	7.328 \| good	16.234 \| good	29.082 \| good	0.532 \| good	2.282 \| good	0.137 \| good
2026-06-27T21:00:00.000Z	38 \| good	7.345 \| good	13.505 \| good	28.748 \| good	0.586 \| good	2.904 \| good	0.137 \| good
2026-06-27T22:00:00.000Z	38 \| good	7.139 \| good	14.876 \| good	28.84 \| good	0.57 \| good	5.566 \| good	0.137 \| good
2026-06-27T23:00:00.000Z	38 \| good	7.135 \| good	16.142 \| good	28.237 \| good	0.572 \| good	4.79 \| good	0.137 \| good
2026-06-28T00:00:00.000Z	38 \| good	7.092 \| good	14.295 \| good	31.068 \| good	0.553 \| good	4.57 \| good	0.137 \| good
2026-06-28T01:00:00.000Z	38 \| good	6.649 \| good	10.939 \| good	30.654 \| good	0.534 \| good	2.987 \| good	0.176 \| good
2026-06-28T02:00:00.000Z	33 \| good	6.445 \| good	10.286 \| good	28.806 \| good	0.514 \| good	2.11 \| good	0.176 \| good
2026-06-28T03:00:00.000Z	44 \| good	8.194 \| good	36.029 \| good	24.325 \| good	0.211 \| good	2.385 \| good	0.154 \| good
2026-06-28T04:00:00.000Z	33 \| good	5.693 \| good	9.011 \| good	29.312 \| good	0.541 \| good	3.079 \| good	0.219 \| good
2026-06-28T05:00:00.000Z	33 \| good	5.857 \| good	12.482 \| good	30.821 \| good	0.542 \| good	1.315 \| good	0.218 \| good
2026-06-28T06:00:00.000Z	33 \| good	5.951 \| good	10.677 \| good	28.065 \| good	0.511 \| good	1.944 \| good	0.192 \| good
2026-06-28T07:00:00.000Z	33 \| good	5.789 \| good	9.804 \| good	28.065 \| good	0.511 \| good	1.924 \| good	0.192 \| good
2026-06-28T08:00:00.000Z	33 \| good	6.109 \| good	13.431 \| good	29.134 \| good	0.477 \| good	1.673 \| good	0.176 \| good
2026-06-28T09:00:00.000Z	33 \| good	5.608 \| good	13.688 \| good	29.87 \| good	0.532 \| good	0.828 \| good	0.176 \| good
2026-06-28T10:00:00.000Z	28 \| good	4.886 \| good	12.351 \| good	29.809 \| good	0.528 \| good	1.267 \| good	0.176 \| good
2026-06-28T11:00:00.000Z	28 \| good	3.422 \| good	9.055 \| good	29.903 \| good	0.512 \| good	1.882 \| good	0.197 \| good
2026-06-28T12:00:00.000Z	27 \| good	5.049 \| good	10.976 \| good	27.109 \| good	0.601 \| good	6.324 \| good	0.182 \| good
2026-06-28T13:00:00.000Z	27 \| good	5.21 \| good	11.778 \| good	27.109 \| good	0.563 \| good	6.251 \| good	0.18 \| good
2026-06-28T14:00:00.000Z	38 \| good	6.592 \| good	14.749 \| good	24.266 \| good	0.561 \| good	2.675 \| good	0.15 \| good
2026-06-28T15:00:00.000Z	38 \| good	6.693 \| good	13.969 \| good	25.878 \| good	0.592 \| good	3.877 \| good	0.161 \| good
2026-06-28T16:00:00.000Z	38 \| good	7.201 \| good	22.296 \| good	25.043 \| good	0.625 \| good	4.893 \| good	0.182 \| good
2026-06-28T17:00:00.000Z	44 \| good	7.925 \| good	20.741 \| good	26.024 \| good	0.165 \| good	9.277 \| good	0.137 \| good
2026-06-28T18:00:00.000Z	44 \| good	8.258 \| good	21.602 \| good	25.485 \| good	0.162 \| good	7.153 \| good	0.137 \| good
2026-06-28T19:00:00.000Z	44 \| good	8.355 \| good	24.044 \| good	25.732 \| good	0.249 \| good	9.737 \| good	0.158 \| good
2026-06-28T20:00:00.000Z	44 \| good	7.924 \| good	21.231 \| good	25.719 \| good	0.163 \| good	5.491 \| good	0.137 \| good
2026-06-28T21:00:00.000Z	38 \| good	7.401 \| good	16.128 \| good	26.981 \| good	0.161 \| good	2.725 \| good	0.158 \| good
2026-06-28T22:00:00.000Z	38 \| good	7.035 \| good	16.494 \| good	28.137 \| good	0.161 \| good	3.081 \| good	0.158 \| good
2026-06-28T23:00:00.000Z	38 \| good	7.211 \| good	17.507 \| good	27.392 \| good	0.602 \| good	3.597 \| good	0.148 \| good
2026-06-29T00:00:00.000Z	38 \| good	7.23 \| good	13.284 \| good	28.324 \| good	0.161 \| good	4.707 \| good	0.203 \| good
2026-06-29T01:00:00.000Z	38 \| good	7.303 \| good	17.585 \| good	27.776 \| good	0.583 \| good	5.448 \| good	0.201 \| good
2026-06-29T02:00:00.000Z	38 \| good	6.934 \| good	16.861 \| good	27.262 \| good	0.616 \| good	6.378 \| good	0.214 \| good
2026-06-29T03:00:00.000Z	58 \| moderate	12.689 \| fine	57.174 \| fine	26.176 \| good	0.201 \| good	3.199 \| good	0.181 \| good
2026-06-29T04:00:00.000Z	38 \| good	7.202 \| good	12.71 \| good	30.132 \| good	0.666 \| good	3.353 \| good	0.192 \| good
2026-06-29T05:00:00.000Z	44 \| good	8.079 \| good	20.488 \| good	27.543 \| good	0.441 \| good	4.434 \| good	0.192 \| good
2026-06-29T06:00:00.000Z	44 \| good	7.516 \| good	18.539 \| good	23.482 \| good	0.58 \| good	6.047 \| good	0.203 \| good
2026-06-29T07:00:00.000Z	44 \| good	7.773 \| good	18.624 \| good	23.482 \| good	0.58 \| good	6.007 \| good	0.203 \| good
2026-06-29T08:00:00.000Z	44 \| good	7.98 \| good	17.326 \| good	19.188 \| good	0.448 \| good	5.385 \| good	0.182 \| good
2026-06-29T09:00:00.000Z	44 \| good	7.996 \| good	15.555 \| good	14.224 \| good	0.684 \| good	7.683 \| good	0.203 \| good
2026-06-29T10:00:00.000Z	44 \| good	8.287 \| good	16.389 \| good	11.014 \| good	0.702 \| good	8.219 \| good	0.199 \| good
2026-06-29T11:00:00.000Z	49 \| good	8.751 \| good	18.801 \| good	12.531 \| good	0.817 \| good	3.769 \| good	0.189 \| good
2026-06-29T12:00:00.000Z	49 \| good	9.348 \| good	20.653 \| good	14.318 \| good	1.224 \| good	3.268 \| good	0.272 \| good
2026-06-29T13:00:00.000Z	52 \| moderate	9.599 \| good	22.393 \| good	14.318 \| good	1.226 \| good	3.312 \| good	0.267 \| good
2026-06-29T14:00:00.000Z	54 \| moderate	10.611 \| good	23.937 \| good	18.615 \| good	0.17 \| good	5.309 \| good	0.192 \| good
2026-06-29T15:00:00.000Z	54 \| moderate	10.961 \| good	26.975 \| good	19.591 \| good	0.163 \| good	4.866 \| good	0.192 \| good
2026-06-29T16:00:00.000Z	54 \| moderate	10.911 \| good	30.177 \| good	22.279 \| good	0.168 \| good	4.808 \| good	0.15 \| good
2026-06-29T17:00:00.000Z	54 \| moderate	10.743 \| good	21.506 \| good	24.685 \| good	0.962 \| good	7.068 \| good	0.121 \| good
2026-06-29T18:00:00.000Z	52 \| moderate	10.499 \| good	20.699 \| good	26.131 \| good	0.202 \| good	3.504 \| good	0.121 \| good
2026-06-29T18:00:00.000Z	52 \| moderate	9.762 \| good	20.212 \| good	25.988 \| good	0.11 \| good	3.68 \| good	0.121 \| good
2026-06-29T19:00:00.000Z	27 \| good	4.915 \| good	21.39 \| good	27.805 \| good	0.149 \| good	0.68 \| good	0.142 \| good
2026-06-29T20:00:00.000Z	28 \| good	4.723 \| good	20.412 \| good	30.324 \| good	0.144 \| good	0.747 \| good	0.14 \| good
2026-06-29T21:00:00.000Z	29 \| good	4.342 \| good	18.829 \| good	31.23 \| good	0.135 \| good	0.922 \| good	0.14 \| good
2026-06-29T22:00:00.000Z	27 \| good	4.545 \| good	19.581 \| good	28.685 \| good	0.131 \| good	1.212 \| good	0.142 \| good
2026-06-29T23:00:00.000Z	22 \| good	4.223 \| good	18.591 \| good	24.405 \| good	0.129 \| good	1.709 \| good	0.145 \| good
2026-06-30T00:00:00.000Z	22 \| good	4.236 \| good	18.773 \| good	22.918 \| good	0.137 \| good	2.288 \| good	0.148 \| good
2026-06-30T01:00:00.000Z	27 \| good	5.082 \| good	21.96 \| good	21.531 \| good	0.151 \| good	2.709 \| good	0.15 \| good
2026-06-30T02:00:00.000Z	27 \| good	5.33 \| good	22.989 \| good	19.858 \| good	0.157 \| good	2.787 \| good	0.15 \| good
2026-06-30T03:00:00.000Z	33 \| good	6.011 \| good	26.796 \| good	19.881 \| good	0.163 \| good	2.716 \| good	0.149 \| good
2026-06-30T04:00:00.000Z	38 \| good	7.021 \| good	31.045 \| good	19.715 \| good	0.162 \| good	2.677 \| good	0.149 \| good
2026-06-30T05:00:00.000Z	44 \| good	8.338 \| good	36.759 \| good	18.565 \| good	0.168 \| good	2.45 \| good	0.146 \| good
2026-06-30T06:00:00.000Z	49 \| good	9.229 \| good	41.199 \| good	16.247 \| good	0.188 \| good	2.42 \| good	0.146 \| good
2026-06-30T07:00:00.000Z	52 \| moderate	10.351 \| good	45.941 \| good	14.33 \| good	0.211 \| good	2.543 \| good	0.15 \| good
2026-06-30T08:00:00.000Z	54 \| moderate	10.65 \| good	47.148 \| good	14.361 \| good	0.226 \| good	2.731 \| good	0.155 \| good
2026-06-30T09:00:00.000Z	54 \| moderate	10.993 \| good	48.63 \| good	16.951 \| good	0.246 \| good	2.91 \| good	0.161 \| good
2026-06-30T10:00:00.000Z	54 \| moderate	10.82 \| good	47.808 \| good	14.521 \| good	0.241 \| good	2.974 \| good	0.168 \| good
2026-06-30T11:00:00.000Z	56 \| moderate	11.861 \| good	53.171 \| good	16.267 \| good	0.222 \| good	2.811 \| good	0.177 \| good
2026-06-30T12:00:00.000Z	56 \| moderate	11.68 \| good	52.483 \| good	19.825 \| good	0.238 \| good	2.642 \| good	0.186 \| good
2026-06-30T13:00:00.000Z	54 \| moderate	10.916 \| good	48.462 \| good	25.514 \| good	0.267 \| good	2.23 \| good	0.194 \| good
2026-06-30T14:00:00.000Z	56 \| moderate	12.112 \| fine	54.425 \| good	31.397 \| good	0.271 \| good	1.965 \| good	0.202 \| good
2026-06-30T15:00:00.000Z	58 \| moderate	12.926 \| fine	57.634 \| fine	34.865 \| good	0.273 \| good	1.69 \| good	0.206 \| good
2026-06-30T16:00:00.000Z	58 \| moderate	12.898 \| fine	57.518 \| fine	38.079 \| good	0.268 \| good	1.542 \| good	0.21 \| good
2026-06-30T17:00:00.000Z	60 \| moderate	13.665 \| fine	61.154 \| fine	42.385 \| good	0.261 \| good	1.502 \| good	0.213 \| good
2026-06-30T18:00:00.000Z	58 \| moderate	13.245 \| fine	59.237 \| fine	48.577 \| good	0.255 \| good	1.517 \| good	0.215 \| good
2026-06-30T19:00:00.000Z	58 \| moderate	13.292 \| fine	59.227 \| fine	51.686 \| good	0.249 \| good	1.55 \| good	0.214 \| good
2026-06-30T20:00:00.000Z	58 \| moderate	12.912 \| fine	58.298 \| fine	52.193 \| good	0.243 \| good	1.604 \| good	0.209 \| good
2026-06-30T21:00:00.000Z	58 \| moderate	13.047 \| fine	58.746 \| fine	50.711 \| good	0.232 \| good	1.725 \| good	0.203 \| good
2026-06-30T22:00:00.000Z	60 \| moderate	14.214 \| fine	64.078 \| fine	48.794 \| good	0.22 \| good	1.951 \| good	0.197 \| good
2026-06-30T23:00:00.000Z	64 \| moderate	15.62 \| fine	69.963 \| fine	43.315 \| good	0.212 \| good	2.273 \| good	0.191 \| good
2026-07-01T00:00:00.000Z	60 \| moderate	13.608 \| fine	61.145 \| fine	35.585 \| good	0.22 \| good	2.594 \| good	0.187 \| good
2026-07-01T01:00:00.000Z	62 \| moderate	14.689 \| fine	65.898 \| fine	41.022 \| good	0.242 \| good	3.066 \| good	0.189 \| good
2026-07-01T02:00:00.000Z	64 \| moderate	15.824 \| fine	70.97 \| fine	42.276 \| good	0.253 \| good	2.943 \| good	0.19 \| good
2026-07-01T03:00:00.000Z	60 \| moderate	14.172 \| fine	63.447 \| fine	42.195 \| good	0.223 \| good	2.442 \| good	0.189 \| good
2026-07-01T04:00:00.000Z	58 \| moderate	13.178 \| fine	59.502 \| fine	40.057 \| good	0.164 \| good	1.682 \| good	0.176 \| good
2026-07-01T05:00:00.000Z	56 \| moderate	12.103 \| fine	54.489 \| good	37.622 \| good	0.154 \| good	1.516 \| good	0.169 \| good
2026-07-01T06:00:00.000Z	54 \| moderate	10.947 \| good	48.334 \| good	32.89 \| good	0.189 \| good	1.741 \| good	0.163 \| good
2026-07-01T07:00:00.000Z	54 \| moderate	10.943 \| good	48.389 \| good	31.138 \| good	0.209 \| good	2.175 \| good	0.157 \| good
2026-07-01T08:00:00.000Z	54 \| moderate	11.42 \| good	50.408 \| good	28.981 \| good	0.224 \| good	2.625 \| good	0.155 \| good
2026-07-01T09:00:00.000Z	56 \| moderate	12.371 \| fine	55.661 \| fine	26.771 \| good	0.239 \| good	2.995 \| good	0.157 \| good
2026-07-01T10:00:00.000Z	58 \| moderate	12.511 \| fine	56.889 \| fine	24.951 \| good	0.247 \| good	3.009 \| good	0.163 \| good
2026-07-01T11:00:00.000Z	60 \| moderate	13.653 \| fine	61.119 \| fine	25.178 \| good	0.24 \| good	2.615 \| good	0.173 \| good
2026-07-01T12:00:00.000Z	60 \| moderate	13.845 \| fine	62.442 \| fine	25.991 \| good	0.263 \| good	2.199 \| good	0.18 \| good
2026-07-01T13:00:00.000Z	60 \| moderate	14.346 \| fine	63.997 \| fine	28.583 \| good	0.268 \| good	1.67 \| good	0.186 \| good
2026-07-01T14:00:00.000Z	64 \| moderate	15.661 \| fine	69.434 \| fine	32.162 \| good	0.266 \| good	1.11 \| good	0.185 \| good
2026-07-01T15:00:00.000Z	64 \| moderate	15.503 \| fine	69.046 \| fine	35.626 \| good	0.285 \| good	0.814 \| good	0.184 \| good
2026-07-01T16:00:00.000Z	60 \| moderate	13.885 \| fine	61.748 \| fine	34.689 \| good	0.348 \| good	0.656 \| good	0.182 \| good
2026-07-01T17:00:00.000Z	56 \| moderate	12.182 \| fine	54.617 \| good	34.192 \| good	0.347 \| good	0.635 \| good	0.182 \| good
2026-07-01T18:00:00.000Z	52 \| moderate	9.546 \| good	42.875 \| good	29.175 \| good	0.313 \| good	0.675 \| good	0.183 \| good

South Portland

Empower business decisions with accurate air quality data

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

0.12ppm

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

Air quality levels in US

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

View Polluted Cities

Check live rankings of places in the USA with the cleanest air.

View Clean Cities

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 03:00:00, 2026-06-29.

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 04:00:00 on 2026-06-29.

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 9.762 μg/m³.

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

South Portland, Maine currently has a PM₁₀ concentration of 20.212 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 0.121 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 0.11 ppb.

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

South Portland, Maine currently has an ozone (O₃) concentration of 25.988 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 3.68 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions

Refund Policy

Terms & Conditions

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-06-27T19:00:00.000Z	44 \| good	7.688 \| good	18.289 \| good	26.186 \| good	0.55 \| good	4.388 \| good	0.137 \| good
2026-06-27T20:00:00.000Z	38 \| good	7.328 \| good	16.234 \| good	29.082 \| good	0.532 \| good	2.282 \| good	0.137 \| good
2026-06-27T21:00:00.000Z	38 \| good	7.345 \| good	13.505 \| good	28.748 \| good	0.586 \| good	2.904 \| good	0.137 \| good
2026-06-27T22:00:00.000Z	38 \| good	7.139 \| good	14.876 \| good	28.84 \| good	0.57 \| good	5.566 \| good	0.137 \| good
2026-06-27T23:00:00.000Z	38 \| good	7.135 \| good	16.142 \| good	28.237 \| good	0.572 \| good	4.79 \| good	0.137 \| good
2026-06-28T00:00:00.000Z	38 \| good	7.092 \| good	14.295 \| good	31.068 \| good	0.553 \| good	4.57 \| good	0.137 \| good
2026-06-28T01:00:00.000Z	38 \| good	6.649 \| good	10.939 \| good	30.654 \| good	0.534 \| good	2.987 \| good	0.176 \| good
2026-06-28T02:00:00.000Z	33 \| good	6.445 \| good	10.286 \| good	28.806 \| good	0.514 \| good	2.11 \| good	0.176 \| good
2026-06-28T03:00:00.000Z	44 \| good	8.194 \| good	36.029 \| good	24.325 \| good	0.211 \| good	2.385 \| good	0.154 \| good
2026-06-28T04:00:00.000Z	33 \| good	5.693 \| good	9.011 \| good	29.312 \| good	0.541 \| good	3.079 \| good	0.219 \| good
2026-06-28T05:00:00.000Z	33 \| good	5.857 \| good	12.482 \| good	30.821 \| good	0.542 \| good	1.315 \| good	0.218 \| good
2026-06-28T06:00:00.000Z	33 \| good	5.951 \| good	10.677 \| good	28.065 \| good	0.511 \| good	1.944 \| good	0.192 \| good
2026-06-28T07:00:00.000Z	33 \| good	5.789 \| good	9.804 \| good	28.065 \| good	0.511 \| good	1.924 \| good	0.192 \| good
2026-06-28T08:00:00.000Z	33 \| good	6.109 \| good	13.431 \| good	29.134 \| good	0.477 \| good	1.673 \| good	0.176 \| good
2026-06-28T09:00:00.000Z	33 \| good	5.608 \| good	13.688 \| good	29.87 \| good	0.532 \| good	0.828 \| good	0.176 \| good
2026-06-28T10:00:00.000Z	28 \| good	4.886 \| good	12.351 \| good	29.809 \| good	0.528 \| good	1.267 \| good	0.176 \| good
2026-06-28T11:00:00.000Z	28 \| good	3.422 \| good	9.055 \| good	29.903 \| good	0.512 \| good	1.882 \| good	0.197 \| good
2026-06-28T12:00:00.000Z	27 \| good	5.049 \| good	10.976 \| good	27.109 \| good	0.601 \| good	6.324 \| good	0.182 \| good
2026-06-28T13:00:00.000Z	27 \| good	5.21 \| good	11.778 \| good	27.109 \| good	0.563 \| good	6.251 \| good	0.18 \| good
2026-06-28T14:00:00.000Z	38 \| good	6.592 \| good	14.749 \| good	24.266 \| good	0.561 \| good	2.675 \| good	0.15 \| good
2026-06-28T15:00:00.000Z	38 \| good	6.693 \| good	13.969 \| good	25.878 \| good	0.592 \| good	3.877 \| good	0.161 \| good
2026-06-28T16:00:00.000Z	38 \| good	7.201 \| good	22.296 \| good	25.043 \| good	0.625 \| good	4.893 \| good	0.182 \| good
2026-06-28T17:00:00.000Z	44 \| good	7.925 \| good	20.741 \| good	26.024 \| good	0.165 \| good	9.277 \| good	0.137 \| good
2026-06-28T18:00:00.000Z	44 \| good	8.258 \| good	21.602 \| good	25.485 \| good	0.162 \| good	7.153 \| good	0.137 \| good
2026-06-28T19:00:00.000Z	44 \| good	8.355 \| good	24.044 \| good	25.732 \| good	0.249 \| good	9.737 \| good	0.158 \| good
2026-06-28T20:00:00.000Z	44 \| good	7.924 \| good	21.231 \| good	25.719 \| good	0.163 \| good	5.491 \| good	0.137 \| good
2026-06-28T21:00:00.000Z	38 \| good	7.401 \| good	16.128 \| good	26.981 \| good	0.161 \| good	2.725 \| good	0.158 \| good
2026-06-28T22:00:00.000Z	38 \| good	7.035 \| good	16.494 \| good	28.137 \| good	0.161 \| good	3.081 \| good	0.158 \| good
2026-06-28T23:00:00.000Z	38 \| good	7.211 \| good	17.507 \| good	27.392 \| good	0.602 \| good	3.597 \| good	0.148 \| good
2026-06-29T00:00:00.000Z	38 \| good	7.23 \| good	13.284 \| good	28.324 \| good	0.161 \| good	4.707 \| good	0.203 \| good
2026-06-29T01:00:00.000Z	38 \| good	7.303 \| good	17.585 \| good	27.776 \| good	0.583 \| good	5.448 \| good	0.201 \| good
2026-06-29T02:00:00.000Z	38 \| good	6.934 \| good	16.861 \| good	27.262 \| good	0.616 \| good	6.378 \| good	0.214 \| good
2026-06-29T03:00:00.000Z	58 \| moderate	12.689 \| fine	57.174 \| fine	26.176 \| good	0.201 \| good	3.199 \| good	0.181 \| good
2026-06-29T04:00:00.000Z	38 \| good	7.202 \| good	12.71 \| good	30.132 \| good	0.666 \| good	3.353 \| good	0.192 \| good
2026-06-29T05:00:00.000Z	44 \| good	8.079 \| good	20.488 \| good	27.543 \| good	0.441 \| good	4.434 \| good	0.192 \| good
2026-06-29T06:00:00.000Z	44 \| good	7.516 \| good	18.539 \| good	23.482 \| good	0.58 \| good	6.047 \| good	0.203 \| good
2026-06-29T07:00:00.000Z	44 \| good	7.773 \| good	18.624 \| good	23.482 \| good	0.58 \| good	6.007 \| good	0.203 \| good
2026-06-29T08:00:00.000Z	44 \| good	7.98 \| good	17.326 \| good	19.188 \| good	0.448 \| good	5.385 \| good	0.182 \| good
2026-06-29T09:00:00.000Z	44 \| good	7.996 \| good	15.555 \| good	14.224 \| good	0.684 \| good	7.683 \| good	0.203 \| good
2026-06-29T10:00:00.000Z	44 \| good	8.287 \| good	16.389 \| good	11.014 \| good	0.702 \| good	8.219 \| good	0.199 \| good
2026-06-29T11:00:00.000Z	49 \| good	8.751 \| good	18.801 \| good	12.531 \| good	0.817 \| good	3.769 \| good	0.189 \| good
2026-06-29T12:00:00.000Z	49 \| good	9.348 \| good	20.653 \| good	14.318 \| good	1.224 \| good	3.268 \| good	0.272 \| good
2026-06-29T13:00:00.000Z	52 \| moderate	9.599 \| good	22.393 \| good	14.318 \| good	1.226 \| good	3.312 \| good	0.267 \| good
2026-06-29T14:00:00.000Z	54 \| moderate	10.611 \| good	23.937 \| good	18.615 \| good	0.17 \| good	5.309 \| good	0.192 \| good
2026-06-29T15:00:00.000Z	54 \| moderate	10.961 \| good	26.975 \| good	19.591 \| good	0.163 \| good	4.866 \| good	0.192 \| good
2026-06-29T16:00:00.000Z	54 \| moderate	10.911 \| good	30.177 \| good	22.279 \| good	0.168 \| good	4.808 \| good	0.15 \| good
2026-06-29T17:00:00.000Z	54 \| moderate	10.743 \| good	21.506 \| good	24.685 \| good	0.962 \| good	7.068 \| good	0.121 \| good
2026-06-29T18:00:00.000Z	52 \| moderate	10.499 \| good	20.699 \| good	26.131 \| good	0.202 \| good	3.504 \| good	0.121 \| good
2026-06-29T18:00:00.000Z	52 \| moderate	9.762 \| good	20.212 \| good	25.988 \| good	0.11 \| good	3.68 \| good	0.121 \| good
2026-06-29T19:00:00.000Z	27 \| good	4.915 \| good	21.39 \| good	27.805 \| good	0.149 \| good	0.68 \| good	0.142 \| good
2026-06-29T20:00:00.000Z	28 \| good	4.723 \| good	20.412 \| good	30.324 \| good	0.144 \| good	0.747 \| good	0.14 \| good
2026-06-29T21:00:00.000Z	29 \| good	4.342 \| good	18.829 \| good	31.23 \| good	0.135 \| good	0.922 \| good	0.14 \| good
2026-06-29T22:00:00.000Z	27 \| good	4.545 \| good	19.581 \| good	28.685 \| good	0.131 \| good	1.212 \| good	0.142 \| good
2026-06-29T23:00:00.000Z	22 \| good	4.223 \| good	18.591 \| good	24.405 \| good	0.129 \| good	1.709 \| good	0.145 \| good
2026-06-30T00:00:00.000Z	22 \| good	4.236 \| good	18.773 \| good	22.918 \| good	0.137 \| good	2.288 \| good	0.148 \| good
2026-06-30T01:00:00.000Z	27 \| good	5.082 \| good	21.96 \| good	21.531 \| good	0.151 \| good	2.709 \| good	0.15 \| good
2026-06-30T02:00:00.000Z	27 \| good	5.33 \| good	22.989 \| good	19.858 \| good	0.157 \| good	2.787 \| good	0.15 \| good
2026-06-30T03:00:00.000Z	33 \| good	6.011 \| good	26.796 \| good	19.881 \| good	0.163 \| good	2.716 \| good	0.149 \| good
2026-06-30T04:00:00.000Z	38 \| good	7.021 \| good	31.045 \| good	19.715 \| good	0.162 \| good	2.677 \| good	0.149 \| good
2026-06-30T05:00:00.000Z	44 \| good	8.338 \| good	36.759 \| good	18.565 \| good	0.168 \| good	2.45 \| good	0.146 \| good
2026-06-30T06:00:00.000Z	49 \| good	9.229 \| good	41.199 \| good	16.247 \| good	0.188 \| good	2.42 \| good	0.146 \| good
2026-06-30T07:00:00.000Z	52 \| moderate	10.351 \| good	45.941 \| good	14.33 \| good	0.211 \| good	2.543 \| good	0.15 \| good
2026-06-30T08:00:00.000Z	54 \| moderate	10.65 \| good	47.148 \| good	14.361 \| good	0.226 \| good	2.731 \| good	0.155 \| good
2026-06-30T09:00:00.000Z	54 \| moderate	10.993 \| good	48.63 \| good	16.951 \| good	0.246 \| good	2.91 \| good	0.161 \| good
2026-06-30T10:00:00.000Z	54 \| moderate	10.82 \| good	47.808 \| good	14.521 \| good	0.241 \| good	2.974 \| good	0.168 \| good
2026-06-30T11:00:00.000Z	56 \| moderate	11.861 \| good	53.171 \| good	16.267 \| good	0.222 \| good	2.811 \| good	0.177 \| good
2026-06-30T12:00:00.000Z	56 \| moderate	11.68 \| good	52.483 \| good	19.825 \| good	0.238 \| good	2.642 \| good	0.186 \| good
2026-06-30T13:00:00.000Z	54 \| moderate	10.916 \| good	48.462 \| good	25.514 \| good	0.267 \| good	2.23 \| good	0.194 \| good
2026-06-30T14:00:00.000Z	56 \| moderate	12.112 \| fine	54.425 \| good	31.397 \| good	0.271 \| good	1.965 \| good	0.202 \| good
2026-06-30T15:00:00.000Z	58 \| moderate	12.926 \| fine	57.634 \| fine	34.865 \| good	0.273 \| good	1.69 \| good	0.206 \| good
2026-06-30T16:00:00.000Z	58 \| moderate	12.898 \| fine	57.518 \| fine	38.079 \| good	0.268 \| good	1.542 \| good	0.21 \| good
2026-06-30T17:00:00.000Z	60 \| moderate	13.665 \| fine	61.154 \| fine	42.385 \| good	0.261 \| good	1.502 \| good	0.213 \| good
2026-06-30T18:00:00.000Z	58 \| moderate	13.245 \| fine	59.237 \| fine	48.577 \| good	0.255 \| good	1.517 \| good	0.215 \| good
2026-06-30T19:00:00.000Z	58 \| moderate	13.292 \| fine	59.227 \| fine	51.686 \| good	0.249 \| good	1.55 \| good	0.214 \| good
2026-06-30T20:00:00.000Z	58 \| moderate	12.912 \| fine	58.298 \| fine	52.193 \| good	0.243 \| good	1.604 \| good	0.209 \| good
2026-06-30T21:00:00.000Z	58 \| moderate	13.047 \| fine	58.746 \| fine	50.711 \| good	0.232 \| good	1.725 \| good	0.203 \| good
2026-06-30T22:00:00.000Z	60 \| moderate	14.214 \| fine	64.078 \| fine	48.794 \| good	0.22 \| good	1.951 \| good	0.197 \| good
2026-06-30T23:00:00.000Z	64 \| moderate	15.62 \| fine	69.963 \| fine	43.315 \| good	0.212 \| good	2.273 \| good	0.191 \| good
2026-07-01T00:00:00.000Z	60 \| moderate	13.608 \| fine	61.145 \| fine	35.585 \| good	0.22 \| good	2.594 \| good	0.187 \| good
2026-07-01T01:00:00.000Z	62 \| moderate	14.689 \| fine	65.898 \| fine	41.022 \| good	0.242 \| good	3.066 \| good	0.189 \| good
2026-07-01T02:00:00.000Z	64 \| moderate	15.824 \| fine	70.97 \| fine	42.276 \| good	0.253 \| good	2.943 \| good	0.19 \| good
2026-07-01T03:00:00.000Z	60 \| moderate	14.172 \| fine	63.447 \| fine	42.195 \| good	0.223 \| good	2.442 \| good	0.189 \| good
2026-07-01T04:00:00.000Z	58 \| moderate	13.178 \| fine	59.502 \| fine	40.057 \| good	0.164 \| good	1.682 \| good	0.176 \| good
2026-07-01T05:00:00.000Z	56 \| moderate	12.103 \| fine	54.489 \| good	37.622 \| good	0.154 \| good	1.516 \| good	0.169 \| good
2026-07-01T06:00:00.000Z	54 \| moderate	10.947 \| good	48.334 \| good	32.89 \| good	0.189 \| good	1.741 \| good	0.163 \| good
2026-07-01T07:00:00.000Z	54 \| moderate	10.943 \| good	48.389 \| good	31.138 \| good	0.209 \| good	2.175 \| good	0.157 \| good
2026-07-01T08:00:00.000Z	54 \| moderate	11.42 \| good	50.408 \| good	28.981 \| good	0.224 \| good	2.625 \| good	0.155 \| good
2026-07-01T09:00:00.000Z	56 \| moderate	12.371 \| fine	55.661 \| fine	26.771 \| good	0.239 \| good	2.995 \| good	0.157 \| good
2026-07-01T10:00:00.000Z	58 \| moderate	12.511 \| fine	56.889 \| fine	24.951 \| good	0.247 \| good	3.009 \| good	0.163 \| good
2026-07-01T11:00:00.000Z	60 \| moderate	13.653 \| fine	61.119 \| fine	25.178 \| good	0.24 \| good	2.615 \| good	0.173 \| good
2026-07-01T12:00:00.000Z	60 \| moderate	13.845 \| fine	62.442 \| fine	25.991 \| good	0.263 \| good	2.199 \| good	0.18 \| good
2026-07-01T13:00:00.000Z	60 \| moderate	14.346 \| fine	63.997 \| fine	28.583 \| good	0.268 \| good	1.67 \| good	0.186 \| good
2026-07-01T14:00:00.000Z	64 \| moderate	15.661 \| fine	69.434 \| fine	32.162 \| good	0.266 \| good	1.11 \| good	0.185 \| good
2026-07-01T15:00:00.000Z	64 \| moderate	15.503 \| fine	69.046 \| fine	35.626 \| good	0.285 \| good	0.814 \| good	0.184 \| good
2026-07-01T16:00:00.000Z	60 \| moderate	13.885 \| fine	61.748 \| fine	34.689 \| good	0.348 \| good	0.656 \| good	0.182 \| good
2026-07-01T17:00:00.000Z	56 \| moderate	12.182 \| fine	54.617 \| good	34.192 \| good	0.347 \| good	0.635 \| good	0.182 \| good
2026-07-01T18:00:00.000Z	52 \| moderate	9.546 \| good	42.875 \| good	29.175 \| good	0.313 \| good	0.675 \| good	0.183 \| 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?