Air Pollution in Maryland: Real-time Air Quality Index and smog alert.

The latest data Last 7 days Maryland pollution March 2016 - May 2020
Current data from stations: Beltsville Blackwater NWR Piney Run
Locations: Dorchester County » Garrett County » Prince George's County »
Pollution and air quality forecast for Maryland. Today is Saturday, April 20, 2024. The following air pollution values have been recorded for Maryland:
  1. ozone (O3) - 0 (Good)
  2. carbon monoxide (CO) - 0 (Good)
  3. particulate matter (PM2.5) dust - 5 (Good)
  4. sulfur dioxide (SO2) - 0 (Good)
  5. nitrogen dioxide (NO2) - 0 (Good)
Real-time Air Quality Index (AQI) for Maryland, Tuesday, April 16, 2024: 1.

air quality index: 0
AQI 1 Good

What is the air quality in Maryland today? Is the air polluted in Maryland?. Is there smog?

Today (Tuesday, April 16, 2024) air quality is good. The air quality has no effect on health. Everyone can continue their outdoor activities normally in Maryland.


How is the O3 level today in Maryland? (ozone (O3))
0 (Good)

How high is the CO level? (carbon monoxide (CO))
0 (Good)

What is the current level of PM2.5 in Maryland? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 5 (Good) For comparison, the highest level of PM2.5 in Maryland in the last 7 days was: 8 (Tuesday, April 9, 2024) and the lowest: 1 (Friday, April 12, 2024). The highest PM2.5 values were recorded: 8.9 (May 2018). The lowest level of particulate matter PM2.5 pollution occurs in month: May (2.2).

What is the level of SO2 pollution? (sulfur dioxide (SO2))
0 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
0 (Good)



Current data Tuesday, April 16, 2024, 10:00 AM

O3 0 (Good)

CO 0 (Good)

PM2,5 5 (Good)

SO2 0 (Good)

NO2 0 (Good)

Data on air pollution from recent days in Maryland

index 2024-04-09 2024-04-10 2024-04-11 2024-04-12 2024-04-13 2024-04-14 2024-04-15 2024-04-16
o3 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good
so2 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good
co 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good
pm25 8
Good		 4
Good		 3
Good		 1
Good		 2
Good		 4
Good		 7
Good		 4
Good
no2 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good		 0
Good
data source »
Air pollution in Maryland from March 2016 to May 2020
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2016-09 2016-08 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-07 2016-06 2016-05 2016-04 2016-03
o3:ppm 0.04 (Good) 0.04 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.02 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.04 (Good) 0.04 (Good) 0.04 (Good) 0.04 (Good) 0.03 (Good) 0.02 (Good) 0.02 (Good) 0.03 (Good) 0.02 (Good) 0.03 (Good) 0.03 (Good) 0.04 (Good) 0.04 (Good) 0.04 (Good) 0.05 (Good) 0.04 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.04 (Good) 0.04 (Good) 0.04 (Good) 0.04 (Good) 0.03 (Good) 0.04 (Good) 0.04 (Good) 0.04 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.03 (Good) 0.04 (Good) 0.04 (Good) 0.04 (Good) 0.04 (Good)
co:ppm 0.11 (Good) 0.12 (Good) 0.13 (Good) 0.13 (Good) 0.12 (Good) 0.13 (Good) 0.12 (Good) 0.11 (Good) 0.13 (Good) 0.13 (Good) 0.12 (Good) 0.11 (Good) 0.12 (Good) 0.13 (Good) 0.15 (Good) 0.15 (Good) 0.14 (Good) 0.14 (Good) 0.12 (Good) 0.09 (Good) 0.08 (Good) 0.11 (Good) 0.12 (Good) 0.12 (Good) 0.12 (Good) 0.14 (Good) 0.16 (Good) 0.14 (Good) 0.14 (Good) 0.14 (Good) 0.13 (Good) 0.12 (Good) 0.12 (Good) 0.13 (Good) 0.15 (Good) 0.12 (Good) 0.12 (Good) 0.13 (Good) 0.14 (Good) 0.14 (Good) 0.15 (Good) 0.14 (Good) 0.15 (Good) 0.16 (Good) 0.16 (Good) 0.14 (Good) 0.14 (Good) 0.15 (Good) 0.17 (Good) 0.19 (Good) 0.2 (Good)
no2:ppm 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good)
pm25 3.3 (Good) 4.1 (Good) 4.3 (Good) 3.9 (Good) 3.9 (Good) 4.8 (Good) 4.9 (Good) 3.9 (Good) 5.8 (Good) 5.5 (Good) 6.4 (Good) 5.7 (Good) 6.4 (Good) 5.1 (Good) 7.4 (Good) 6.5 (Good) 5.8 (Good) 6.2 (Good) 4.8 (Good) 3.5 (Good) 3.4 (Good) 8.4 (Good) 6.7 (Good) 7.3 (Good) 8.9 (Good) 5.7 (Good) 5.4 (Good) 4.4 (Good) 5.7 (Good) 7.3 (Good) 6.2 (Good) 5 (Good) 6.8 (Good) 8.1 (Good) 8.6 (Good) 6.3 (Good) 4 (Good) 3.5 (Good) 6.9 (Good) 6 (Good) 6.2 (Good) 5.5 (Good) 5.4 (Good) 5.6 (Good) 7.5 (Good) 7 (Good) 7.9 (Good) 4 (Good) 2.2 (Good) 3.9 (Good) 5.4 (Good)
so2:ppm - (Good) - (Good) - (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 0 (Good) 0 (Good) 0 (Good) - (Good) 0 (Good) 0 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) - (Good) 0 (Good) 0 (Good) - (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) 0 (Good) - (Good) - (Good) 0 (Good) 0 (Good)
data source »

Beltsville

Tuesday, April 16, 2024, 9:00 AM

O3 0.04 (Good)

ozone (O3)

Blackwater NWR

Tuesday, April 16, 2024, 9:00 AM

O3 0.04 (Good)

ozone (O3)

Piney Run

Tuesday, April 16, 2024, 10:00 AM

CO 0.1 (Good)

carbon monoxide (CO)

PM2,5 5 (Good)

particulate matter (PM2.5) dust

O3 0.02 (Good)

ozone (O3)

SO2 0 (Good)

sulfur dioxide (SO2)

NO2 0 (Good)

nitrogen dioxide (NO2)

Beltsville

index 2024-04-16 2024-04-15 2024-04-14 2024-04-13 2024-04-12 2024-04-11 2024-04-10 2024-04-09
o3 0.04 0.05 0.04 0.04 0.04 0.04 0.04 0.04

Blackwater NWR

index 2024-04-16 2024-04-15 2024-04-14 2024-04-13 2024-04-12 2024-04-11 2024-04-10 2024-04-09
o3 0.05 0.05 0.05 0.04 0.04 0.04 0.04 0.04

Piney Run

index 2024-04-16 2024-04-15 2024-04-14 2024-04-13 2024-04-12 2024-04-11 2024-04-10 2024-04-09
so2 0 0 0 0 0 0 0 0
co 0.1 0.1 0.15 0.1 0.1 0.1 0.1 0.1
pm25 4.4 7.1 4 2.4 0.67 3.3 4.2 7.6
o3 0.04 0.06 0.05 0.04 0.04 0.04 0.05 0.04
no2 0 0 0 0 0 0 0 0

Beltsville

index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2016-09
o3:ppm 0.04 0.04 0.03 0.03 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.04 0.03 0.04 0.04 0.03 0.02 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.04 0.04 0.04 0.02 0.03 0.02 0.02 0.02 0.02 0.03 0.03 0.04 0.04 0.03 0.03
so2:ppm - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0

Blackwater NWR

index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2016-09 2016-08
o3:ppm 0.04 0.04 0.04 0.03 0.03 0.02 0.03 0.03 0.04 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.03 0.02 0.02 0.03 0.03 0.04 0.04 0.04 0.04 0.05 0.04 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.04 0.04 0.04 0.04 0.03 0.04

Piney Run

2016-03   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06 2016-05 2016-04 2016-03
pm25 3.3 4.1 4.3 3.9 3.9 4.8 4.9 3.9 5.8 5.5 6.4 5.7 6.4 5.1 7.4 6.5 5.8 6.2 4.8 3.5 3.4 8.4 6.7 7.3 8.9 5.7 5.4 4.4 5.7 7.3 6.2 5 6.8 8.1 8.6 6.3 4 3.5 6.2 5.5 5.4 5.6 7.5 7 6.9 6 7.9 4 2.2 3.9 5.4
o3:ppm 0.04 0.04 0.04 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.04 0.04 0.04 0.02 0.01 0.02 0.03 0.02 0.03 0.03 0.03 0.03 0.04 0.05 0.04 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.04 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.04 0.04 0.04 0.04
co:ppm 0.11 0.12 0.13 0.13 0.12 0.13 0.12 0.11 0.13 0.13 0.12 0.11 0.12 0.13 0.15 0.15 0.14 0.14 0.12 0.09 0.08 0.11 0.12 0.12 0.12 0.14 0.16 0.14 0.14 0.14 0.13 0.12 0.12 0.13 0.15 0.12 0.12 0.13 0.15 0.14 0.15 0.16 0.16 0.14 0.14 0.14 0.14 0.15 0.17 0.19 0.2
so2:ppm - - - 0 0 0 0 0 - - - - - 0 0 0 - 0 0 - - - - - - 0 0 0 0 0 0 0 - 0 0 - 0 0 0 0 0 0 0 0 0 0 0 - - 0 0
no2:ppm 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 - - - - - - - - - - - - - - - - - - - - - -

* Pollution data source: https://openaq.org (AirNow) The data is licensed under CC-By 4.0