AQSQID: 240230002

Site Name: Piney Run

Location: Frostburg (Piney Run Rd), MD

Reporting: True, Located: True

Current AQI: 22.0

Frostburg (Piney Run Rd) MD, US: 39.705799, -79.011902

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 1, 2020, midnight N/A N/A 2.9 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 22.0
 
March 31, 2020, 11 p.m. N/A N/A 3.2 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) 0.12 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
March 31, 2020, 10 p.m. N/A N/A 2.9 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 24.0
 
March 31, 2020, 9 p.m. N/A N/A 1.9 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) 0.12 ppb (1) N/A 0.0 μg/m3 (0) 25.0
 
March 31, 2020, 8 p.m. N/A N/A 1.8 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) 0.12 ppb (1) N/A 1.0 μg/m3 (4) 25.0
 
March 31, 2020, 7 p.m. N/A N/A 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 1.0 μg/m3 (4) 4.0
 
March 31, 2020, 6 p.m. N/A N/A 1.9 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
March 31, 2020, 5 p.m. N/A N/A 2.5 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
March 31, 2020, 4 p.m. N/A N/A 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A N/A 2.0
 
March 31, 2020, 3 p.m. N/A N/A 1.5 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.12 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
March 31, 2020, 2 p.m. N/A N/A 1.4 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) 0.12 ppb (1) N/A 4.0 μg/m3 (17) 25.0
 
March 31, 2020, 1 p.m. N/A N/A 2.1 ppb (2) N/A N/A N/A 30.0 ppb (23) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
March 31, 2020, noon N/A N/A 1.8 ppb (2) 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 22.0
 
March 31, 2020, 11 a.m. N/A N/A 1.5 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 31, 2020, 10 a.m. N/A N/A 1.4 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) 0.11 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
March 31, 2020, 9 a.m. N/A N/A 1.7 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.11 ppb (1) N/A 1.0 μg/m3 (4) 23.0
 
March 31, 2020, 8 a.m. N/A N/A 1.4 ppb (1) 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.11 ppb (1) N/A 2.0 μg/m3 (8) 24.0
 
March 31, 2020, 7 a.m. N/A N/A 1.1 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 3.0 μg/m3 (12) 25.0
 
March 31, 2020, 6 a.m. N/A N/A 1.2 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.11 ppb (1) N/A 2.0 μg/m3 (8) 25.0
 
March 31, 2020, 5 a.m. N/A N/A 1.5 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 26.0
 
March 31, 2020, 4 a.m. N/A N/A 1.5 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 25.0
 
March 31, 2020, 3 a.m. N/A N/A 1.5 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 26.0
 
March 31, 2020, 2 a.m. N/A N/A 1.5 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.1 ppb (1) N/A -1.0 μg/m3 (0) 27.0
 
March 31, 2020, 1 a.m. N/A N/A 1.4 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 28.0
 
March 31, 2020, midnight N/A N/A 1.2 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 30.0
 
March 30, 2020, 11 p.m. N/A N/A 1.3 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 32.0
 
March 30, 2020, 10 p.m. N/A N/A 1.4 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 33.0
 
March 30, 2020, 9 p.m. N/A N/A 1.3 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) N/A 1.0 μg/m3 (4) 35.0
 
March 30, 2020, 8 p.m. N/A N/A 1.1 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) N/A 0.0 μg/m3 (0) 36.0
 
March 30, 2020, 7 p.m. N/A N/A 1.1 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) N/A 1.0 μg/m3 (4) 36.0
 
March 30, 2020, 6 p.m. N/A N/A 1.1 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) 0.1 ppb (1) N/A 0.0 μg/m3 (0) 37.0
 
March 30, 2020, 5 p.m. N/A N/A 1.2 ppb (1) N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.09 ppb (1) N/A 1.0 μg/m3 (4) 38.0
 
March 30, 2020, 4 p.m. N/A N/A 1.3 ppb (1) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.09 ppb (1) N/A 2.0 μg/m3 (8) 38.0
 
March 30, 2020, 3 p.m. N/A N/A 1.5 ppb (1) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.09 ppb (1) N/A 2.0 μg/m3 (8) 37.0
 
March 30, 2020, 2 p.m. N/A N/A 1.3 ppb (1) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.09 ppb (1) N/A 1.0 μg/m3 (4) 37.0
 
March 30, 2020, 1 p.m. N/A N/A 1.2 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.09 ppb (1) N/A 2.0 μg/m3 (8) 36.0
 
March 30, 2020, noon N/A N/A 1.4 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.09 ppb (1) N/A 5.0 μg/m3 (21) 35.0
 
March 30, 2020, 11 a.m. N/A N/A 1.5 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 35.0
 
March 30, 2020, 10 a.m. N/A N/A 1.3 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) 0.09 ppb (1) N/A 5.0 μg/m3 (21) 36.0
 
March 30, 2020, 9 a.m. N/A N/A 1.1 ppb (1) 0.0 ppb (0) N/A N/A 47.0 ppb (36) 0.09 ppb (1) N/A 2.0 μg/m3 (8) 36.0
 
March 30, 2020, 8 a.m. N/A N/A 1.1 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 36.0
 
March 30, 2020, 7 a.m. N/A N/A 1.1 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 37.0
 
March 30, 2020, 6 a.m. N/A N/A 1.2 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 36.0
 
March 30, 2020, 5 a.m. N/A N/A 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) 0.09 ppb (1) N/A 2.0 μg/m3 (8) 36.0
 
March 30, 2020, 4 a.m. N/A N/A 0.9 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) 0.1 ppb (1) N/A -1.0 μg/m3 (0) 37.0
 
March 30, 2020, 3 a.m. N/A N/A 0.9 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) 0.11 ppb (1) N/A 0.0 μg/m3 (0) 38.0
 
March 30, 2020, 2 a.m. N/A N/A 1.1 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) 0.11 ppb (1) N/A 1.0 μg/m3 (4) 38.0
 
March 30, 2020, 1 a.m. N/A N/A 1.1 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) 0.11 ppb (1) N/A 1.0 μg/m3 (4) 39.0
 
March 30, 2020, midnight N/A N/A 1.1 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 40.0
 
March 29, 2020, 11 p.m. N/A N/A 0.7 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) 0.11 ppb (1) N/A 1.0 μg/m3 (4) 39.0
 
March 29, 2020, 10 p.m. N/A N/A 0.8 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 53.0 ppb (41) 0.11 ppb (1) N/A 1.0 μg/m3 (4) 41.0
 
March 29, 2020, 9 p.m. N/A N/A 0.9 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 56.0 ppb (43) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 43.0
 
March 29, 2020, 8 p.m. N/A N/A 0.9 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 55.0 ppb (42) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 42.0
 
March 29, 2020, 7 p.m. N/A N/A 0.9 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) N/A 5.0 μg/m3 (21) 41.0
 
March 29, 2020, 6 p.m. N/A N/A 0.9 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) 0.1 ppb (1) N/A 5.0 μg/m3 (21) 38.0
 
March 29, 2020, 5 p.m. N/A N/A 1.1 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (35) 0.09 ppb (1) N/A 0.0 μg/m3 (0) 35.0
 
March 29, 2020, 4 p.m. N/A N/A 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 33.0
 
March 29, 2020, 3 p.m. N/A N/A 0.9 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (31) 0.1 ppb (1) N/A 5.0 μg/m3 (21) 31.0
 
March 29, 2020, 2 p.m. N/A N/A 1.1 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) N/A 6.0 μg/m3 (25) 30.0
 
March 29, 2020, 1 p.m. N/A N/A 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) 0.12 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
March 29, 2020, noon N/A N/A 1.4 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (20) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
March 29, 2020, 11 a.m. N/A N/A 1.4 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (17) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 29, 2020, 10 a.m. N/A N/A 1.3 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (18) 0.15 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 29, 2020, 9 a.m. N/A N/A 1.2 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 25.0 ppb (19) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 29, 2020, 8 a.m. N/A N/A 1.6 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (18) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 18.0
 
March 29, 2020, 7 a.m. N/A N/A 1.6 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (15) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 29, 2020, 6 a.m. N/A N/A 1.4 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 17.0 ppb (13) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 13.0
 
March 29, 2020, 5 a.m. N/A N/A 1.5 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (15) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 29, 2020, 4 a.m. N/A N/A 1.5 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (16) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 29, 2020, 3 a.m. N/A N/A 1.6 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 29, 2020, 2 a.m. N/A N/A 1.6 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 21.0
 
March 29, 2020, 1 a.m. N/A N/A 1.9 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
March 29, 2020, midnight N/A N/A 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 28, 2020, 11 p.m. N/A N/A 1.9 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) 0.14 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 10 p.m. N/A N/A 2.2 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 9 p.m. N/A N/A 2.6 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.15 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
March 28, 2020, 8 p.m. N/A N/A 2.8 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.17 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
March 28, 2020, 7 p.m. N/A N/A 2.6 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) 0.16 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 28, 2020, 6 p.m. N/A N/A 2.7 ppb (3) 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) 0.17 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 28, 2020, 5 p.m. N/A N/A 2.6 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) 0.16 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 28, 2020, 4 p.m. N/A N/A 2.6 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) 0.14 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 28, 2020, 3 p.m. N/A N/A 2.4 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 28.0
 
March 28, 2020, 2 p.m. N/A N/A 2.1 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) N/A 1.0 μg/m3 (4) 29.0
 
March 28, 2020, 1 p.m. N/A N/A 1.7 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) N/A 0.0 μg/m3 (0) 30.0
 
March 28, 2020, noon N/A N/A 1.5 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) N/A 1.0 μg/m3 (4) 30.0
 
March 28, 2020, 11 a.m. N/A N/A 1.6 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) N/A 1.0 μg/m3 (4) 29.0
 
March 28, 2020, 10 a.m. N/A N/A 1.8 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 28.0
 
March 28, 2020, 9 a.m. N/A N/A 1.9 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 28.0
 
March 28, 2020, 8 a.m. N/A N/A 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 28.0
 
March 28, 2020, 7 a.m. N/A N/A 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 6 a.m. N/A N/A 2.2 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) N/A 6.0 μg/m3 (25) 30.0
 
March 28, 2020, 5 a.m. N/A N/A 1.8 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) N/A 4.0 μg/m3 (17) 28.0
 
March 28, 2020, 4 a.m. N/A N/A 1.4 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 28.0
 
March 28, 2020, 3 a.m. N/A N/A 1.8 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 26.0
 
March 28, 2020, 2 a.m. N/A N/A 1.8 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 26.0
 
March 28, 2020, 1 a.m. N/A N/A 2.3 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
March 28, 2020, midnight N/A N/A 2.9 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 22.0
 
March 27, 2020, 11 p.m. N/A N/A 3.1 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) 0.16 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 10 p.m. N/A N/A 2.8 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 32.0
 
March 27, 2020, 9 p.m. N/A N/A 1.6 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 35.0
 
March 27, 2020, 8 p.m. N/A N/A 1.5 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 36.0
 
March 27, 2020, 7 p.m. N/A N/A 1.4 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 35.0
 
March 27, 2020, 6 p.m. N/A N/A 1.3 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) N/A 1.0 μg/m3 (4) 34.0
 
March 27, 2020, 5 p.m. N/A N/A 1.4 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 34.0
 
March 27, 2020, 4 p.m. N/A N/A 1.4 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 34.0
 
March 27, 2020, 3 p.m. N/A N/A 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 32.0
 
March 27, 2020, 2 p.m. N/A N/A 2.1 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 31.0
 
March 27, 2020, 1 p.m. N/A N/A 2.7 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 30.0
 
March 27, 2020, noon N/A N/A 2.9 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.13 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 11 a.m. N/A N/A 3.7 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 10 a.m. N/A N/A 2.6 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 9 a.m. N/A N/A 2.0 ppb (2) 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
March 27, 2020, 8 a.m. N/A N/A 2.1 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 24.0
 
March 27, 2020, 7 a.m. N/A N/A 1.6 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
March 27, 2020, 6 a.m. N/A N/A 1.5 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (18) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 18.0
 
March 27, 2020, 5 a.m. N/A N/A 1.8 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 20.0
 
March 27, 2020, 4 a.m. N/A N/A 2.4 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 19.0
 
March 27, 2020, 3 a.m. N/A N/A 2.9 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 22.0
 
March 27, 2020, 2 a.m. N/A N/A 2.3 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 24.0
 
March 27, 2020, 1 a.m. N/A N/A 2.6 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
March 27, 2020, midnight N/A N/A 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (29) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 29.0
 
March 26, 2020, 11 p.m. N/A N/A 2.5 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (29) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 29.0
 
March 26, 2020, 10 p.m. N/A N/A 1.8 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 32.0
 
March 26, 2020, 9 p.m. N/A N/A 1.3 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) 0.12 ppb (1) N/A 4.0 μg/m3 (17) 32.0
 
March 26, 2020, 8 p.m. N/A N/A 1.4 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (35) 0.12 ppb (1) N/A -1.0 μg/m3 (0) 35.0
 
March 26, 2020, 7 p.m. N/A N/A 1.4 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) N/A 1.0 μg/m3 (4) 34.0
 
March 26, 2020, 6 p.m. N/A N/A 1.3 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (33) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 33.0
 
March 26, 2020, 5 p.m. N/A N/A 1.8 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 32.0
 
March 26, 2020, 4 p.m. N/A N/A 2.7 ppb (3) 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) N/A 1.0 μg/m3 (4) 33.0
 
March 26, 2020, 3 p.m. N/A N/A 3.7 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 33.0
 
March 26, 2020, 2 p.m. N/A N/A 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 32.0
 
March 26, 2020, 1 p.m. N/A N/A 1.7 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) 0.13 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
March 26, 2020, noon N/A N/A 1.4 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 22.0
 
March 26, 2020, 11 a.m. N/A N/A 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (21) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 21.0
 
March 26, 2020, 10 a.m. N/A N/A 1.3 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 22.0
 
March 26, 2020, 9 a.m. N/A N/A 1.2 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 23.0
 
March 26, 2020, 8 a.m. N/A N/A 1.3 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 25.0
 
March 26, 2020, 7 a.m. N/A N/A 1.6 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 25.0
 
March 26, 2020, 6 a.m. N/A N/A 1.7 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 26.0
 
March 26, 2020, 5 a.m. N/A N/A 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 26, 2020, 4 a.m. N/A N/A 2.4 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 24.0
 
March 26, 2020, 3 a.m. N/A N/A 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 26, 2020, 2 a.m. N/A N/A 4.1 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
March 26, 2020, 1 a.m. N/A N/A 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.16 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 26, 2020, midnight N/A N/A 2.8 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 25, 2020, 11 p.m. N/A N/A 2.1 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 2.0 μg/m3 (8) 25.0
 
March 25, 2020, 10 p.m. N/A N/A 1.7 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A 2.0 μg/m3 (8) 28.0
 
March 25, 2020, 9 p.m. N/A N/A 1.2 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 29.0
 
March 25, 2020, 8 p.m. N/A N/A 1.2 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 31.0
 
March 25, 2020, 7 p.m. N/A N/A 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 31.0
 
March 25, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) 0.14 ppb (2) N/A 0.0 μg/m3 (0) 30.0
 
March 25, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) 0.14 ppb (2) N/A -1.0 μg/m3 (0) 28.0
 
March 25, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 28.0
 
March 25, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 28.0
 
March 25, 2020, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) N/A 2.0 μg/m3 (8) 26.0
 
March 25, 2020, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 1.0 μg/m3 (4) 25.0
 
March 25, 2020, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) N/A 1.0 μg/m3 (4) 25.0
 
March 25, 2020, 11 a.m. N/A N/A 1.5 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 27.0
 
March 25, 2020, 10 a.m. N/A N/A 1.6 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 27.0
 
March 25, 2020, 9 a.m. N/A N/A 1.8 ppb (2) 1.0 ppb (1) N/A N/A 35.0 ppb (27) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 27.0
 
March 25, 2020, 8 a.m. N/A N/A 2.2 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 26.0
 
March 25, 2020, 7 a.m. N/A N/A 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 25.0
 
March 25, 2020, 6 a.m. N/A N/A 2.7 ppb (3) 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 25, 2020, 5 a.m. N/A N/A 2.7 ppb (3) 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 28.0
 
March 25, 2020, 4 a.m. N/A N/A 2.7 ppb (3) 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 27.0
 
March 25, 2020, 3 a.m. N/A N/A 2.7 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.14 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 25, 2020, 2 a.m. N/A N/A 2.2 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
March 25, 2020, 1 a.m. N/A N/A 1.8 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) 0.13 ppb (1) N/A 7.0 μg/m3 (29) 29.0