ID: 1012

AQSQID: 370810013

Site Name: Mendnhal

Added: April 21, 2020, 6:24 p.m.

Updated: March 6, 2021, 9:32 a.m.

Location: Greensboro (Kirkwood), NC

Reporting: True, Located: True

Current AQI: 17.0

Greensboro (Kirkwood) NC, US: 36.109006, -79.802314

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 6, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) 4.0 μg/m3 (17) 17.0
 
March 6, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 8.0 μg/m3 (8) -2.0 μg/m3 (0) 35.0
 
March 6, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (5) 36.0
 
March 6, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (5) 36.0
 
March 6, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 7.0 μg/m3 (7) -1.0 μg/m3 (0) 38.0
 
March 6, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 7.0 μg/m3 (7) 4.0 μg/m3 (17) 38.0
 
March 6, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 9.0 μg/m3 (9) 2.0 μg/m3 (9) 39.0
 
March 6, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 15.0 μg/m3 (14) 2.0 μg/m3 (9) 37.0
 
March 6, 2021, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 4.0 μg/m3 (4) 9.0 μg/m3 (38) 38.0
 
March 5, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (9) 41.0
 
March 5, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 6.0 μg/m3 (6) 1.0 μg/m3 (5) 42.0
 
March 5, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 44.0
 
March 5, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (13) 44.0
 
March 5, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (9) 43.0
 
March 5, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 4.0 μg/m3 (4) 4.0 μg/m3 (17) 42.0
 
March 5, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 4.0 μg/m3 (4) -2.0 μg/m3 (0) 41.0
 
March 5, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 1.0 μg/m3 (1) 4.0 μg/m3 (17) 39.0
 
March 5, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 3.0 μg/m3 (3) 6.0 μg/m3 (25) 38.0
 
March 5, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 6.0 μg/m3 (6) 2.0 μg/m3 (9) 36.0
 
March 5, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 7.0 μg/m3 (7) 3.0 μg/m3 (13) 33.0
 
March 5, 2021, noon N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 8.0 μg/m3 (8) -4.0 μg/m3 (0) 32.0
 
March 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 9.0 μg/m3 (9) 1.0 μg/m3 (5) 32.0
 
March 5, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 7.0 μg/m3 (7) 2.0 μg/m3 (9) 33.0
 
March 5, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 6.0 μg/m3 (6) 0.0 μg/m3 (0) 33.0
 
March 5, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 2.0 μg/m3 (9) 9.0
 
March 5, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 6.0 μg/m3 (6) 2.0 μg/m3 (9) 33.0
 
March 5, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 31.0
 
March 5, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 6.0 μg/m3 (6) 4.0 μg/m3 (17) 38.0
 
March 5, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 9.0 μg/m3 (9) 3.0 μg/m3 (13) 38.0
 
March 5, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 7.0 μg/m3 (7) 3.0 μg/m3 (13) 38.0
 
March 5, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 6.0 μg/m3 (6) 0.0 μg/m3 (0) 42.0
 
March 5, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 6.0 μg/m3 (6) 4.0 μg/m3 (17) 45.0
 
March 5, 2021, midnight N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 7.0 μg/m3 (7) -1.0 μg/m3 (0) 45.0
 
March 4, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 7.0 μg/m3 (7) 0.0 μg/m3 (0) 45.0
 
March 4, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 9.0 μg/m3 (9) 1.0 μg/m3 (5) 44.0
 
March 4, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (9) 46.0
 
March 4, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (13) 47.0
 
March 4, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (5) 48.0
 
March 4, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (5) 48.0
 
March 4, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 10.0 μg/m3 (10) 3.0 μg/m3 (13) 47.0
 
March 4, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 10.0 μg/m3 (10) 5.0 μg/m3 (21) 46.0
 
March 4, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 9.0 μg/m3 (9) 7.0 μg/m3 (30) 45.0
 
March 4, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 10.0 μg/m3 (10) 9.0 μg/m3 (38) 43.0
 
March 4, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 13.0 μg/m3 (13) 6.0 μg/m3 (25) 25.0
 
March 4, 2021, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 5.0 μg/m3 (5) -3.0 μg/m3 (0) 5.0
 
March 4, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 7.0 μg/m3 (7) 1.0 μg/m3 (5) 7.0
 
March 4, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 8.0 μg/m3 (8) 2.0 μg/m3 (9) 9.0
 
March 4, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 9.0 μg/m3 (9) 2.0 μg/m3 (9) 9.0
 
March 4, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 3.0 μg/m3 (13) 13.0
 
March 4, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 8.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
March 4, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 11.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
March 4, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 16.0 μg/m3 (15) 8.0 μg/m3 (34) 34.0
 
March 4, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 14.0 μg/m3 (13) 8.0 μg/m3 (34) 34.0
 
March 4, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 24.0 μg/m3 (23) 7.0 μg/m3 (30) 30.0
 
March 4, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
March 4, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 15.0 μg/m3 (14) 7.0 μg/m3 (30) 30.0
 
March 4, 2021, midnight N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 10.0 μg/m3 (10) 7.0 μg/m3 (30) 30.0
 
March 3, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 7.0 μg/m3 (7) 6.0 μg/m3 (25) 30.0
 
March 3, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (13) 45.0
 
March 3, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 1.0 μg/m3 (1) 2.0 μg/m3 (9) 46.0
 
March 3, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 0.0 μg/m3 (0) 4.0 μg/m3 (17) 47.0
 
March 3, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 1.0 μg/m3 (1) 1.0 μg/m3 (5) 47.0
 
March 3, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 46.0
 
March 3, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (9) 44.0
 
March 3, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 6.0 μg/m3 (6) 4.0 μg/m3 (17) 40.0
 
March 3, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 9.0 μg/m3 (9) 5.0 μg/m3 (21) 37.0
 
March 3, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 13.0 μg/m3 (13) 5.0 μg/m3 (21) 34.0
 
March 3, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 12.0 μg/m3 (12) 8.0 μg/m3 (34) 34.0
 
March 3, 2021, noon N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 11.0 μg/m3 (11) 1.0 μg/m3 (5) 11.0
 
March 3, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 10.0 μg/m3 (10) 5.0 μg/m3 (21) 21.0
 
March 3, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 12.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
March 3, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 10.0 μg/m3 (10) 5.0 μg/m3 (21) 21.0
 
March 3, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 9.0 μg/m3 (38) 38.0
 
March 3, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 11.0 μg/m3 (11) 4.0 μg/m3 (17) 17.0
 
March 3, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 16.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
March 3, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 15.0 μg/m3 (14) 13.0 μg/m3 (53) 53.0
 
March 3, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 16.0 μg/m3 (15) 14.0 μg/m3 (55) 55.0
 
March 3, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 18.0 μg/m3 (17) 12.0 μg/m3 (50) 50.0
 
March 3, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 8.0 μg/m3 (8) 11.0 μg/m3 (46) 46.0
 
March 3, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 11.0 μg/m3 (11) 4.0 μg/m3 (17) 17.0
 
March 3, 2021, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 6.0 μg/m3 (6) 4.0 μg/m3 (17) 25.0
 
March 2, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 6.0 μg/m3 (6) 4.0 μg/m3 (17) 36.0
 
March 2, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 6.0 μg/m3 (6) 7.0 μg/m3 (30) 39.0
 
March 2, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 6.0 μg/m3 (6) 0.0 μg/m3 (0) 40.0
 
March 2, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (5) 40.0
 
March 2, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (13) 41.0
 
March 2, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 2.0 μg/m3 (2) 7.0 μg/m3 (30) 41.0
 
March 2, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (9) 40.0
 
March 2, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 38.0
 
March 2, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (5) 38.0
 
March 2, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 36.0
 
March 2, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 5.0 μg/m3 (5) -1.0 μg/m3 (0) 33.0
 
March 2, 2021, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 33.0
 
March 2, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 7.0 μg/m3 (7) 3.0 μg/m3 (13) 32.0
 
March 2, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (9) 28.0
 
March 2, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (5) 23.0
 
March 2, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
March 2, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 7.0 μg/m3 (7) 0.0 μg/m3 (0) 29.0
 
March 2, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 7.0 μg/m3 (7) 2.0 μg/m3 (9) 31.0
 
March 2, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (9) 33.0
 
March 2, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 3.0 μg/m3 (3) 6.0 μg/m3 (25) 35.0
 
March 2, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 3.0 μg/m3 (3) -2.0 μg/m3 (0) 34.0
 
March 2, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (13) 36.0
 
March 2, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 38.0
 
March 2, 2021, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 37.0
 
March 1, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 6.0 μg/m3 (6) 6.0 μg/m3 (25) 36.0
 
March 1, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (5) 37.0
 
March 1, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 7.0 μg/m3 (7) 1.0 μg/m3 (5) 38.0
 
March 1, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 8.0 μg/m3 (8) 0.0 μg/m3 (0) 38.0
 
March 1, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 0.0 μg/m3 (0) 6.0 μg/m3 (25) 30.0
 
March 1, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 1.0 μg/m3 (1) 1.0 μg/m3 (5) 26.0
 
March 1, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (13) 28.0
 
March 1, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 28.0
 
March 1, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 3.0 μg/m3 (3) 4.0 μg/m3 (17) 27.0
 
March 1, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (9) 23.0
 
March 1, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 6.0 μg/m3 (6) -1.0 μg/m3 (0) 16.0
 
March 1, 2021, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 14.0 μg/m3 (13) -3.0 μg/m3 (0) 23.0
 
March 1, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 18.0 μg/m3 (17) 10.0 μg/m3 (42) 42.0
 
March 1, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 15.0 μg/m3 (14) 7.0 μg/m3 (30) 30.0
 
March 1, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 16.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
March 1, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) 2.0 μg/m3 (9) 18.0
 
March 1, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
March 1, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 12.0 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
March 1, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 9.0 μg/m3 (9) 5.0 μg/m3 (21) 22.0
 
March 1, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 9.0 μg/m3 (9) 7.0 μg/m3 (30) 30.0
 
March 1, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 10.0 μg/m3 (10) 7.0 μg/m3 (30) 30.0
 
March 1, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 10.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
March 1, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 13.0 μg/m3 (13) 8.0 μg/m3 (34) 34.0
 
March 1, 2021, midnight N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 12.0 μg/m3 (12) 5.0 μg/m3 (21) 23.0
 
Feb. 28, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 11.0 μg/m3 (11) 7.0 μg/m3 (30) 30.0
 
Feb. 28, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 16.0 μg/m3 (15) 7.0 μg/m3 (30) 30.0
 
Feb. 28, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 14.0 μg/m3 (13) 6.0 μg/m3 (25) 29.0
 
Feb. 28, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 15.0 μg/m3 (14) 13.0 μg/m3 (53) 53.0
 
Feb. 28, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 10.0 μg/m3 (10) 15.0 μg/m3 (58) 58.0
 
Feb. 28, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 15.0 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
Feb. 28, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 26.0 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
Feb. 28, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 25.0 μg/m3 (24) 18.0 μg/m3 (64) 64.0
 
Feb. 28, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 24.0 μg/m3 (23) 19.0 μg/m3 (66) 66.0
 
Feb. 28, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 16.0 μg/m3 (15) 14.0 μg/m3 (55) 55.0
 
Feb. 28, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 13.0 μg/m3 (13) 12.0 μg/m3 (50) 50.0
 
Feb. 28, 2021, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 15.0 μg/m3 (14) 11.0 μg/m3 (46) 46.0
 
Feb. 28, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 13.0 μg/m3 (13) 12.0 μg/m3 (50) 50.0
 
Feb. 28, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 12.0 μg/m3 (12) 12.0 μg/m3 (50) 50.0
 
Feb. 28, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 15.0 μg/m3 (14) 12.0 μg/m3 (50) 50.0
 
Feb. 28, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 8.0 μg/m3 (34) 34.0
 
Feb. 28, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 13.0 μg/m3 (13) 7.0 μg/m3 (30) 30.0
 
Feb. 28, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
Feb. 28, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 19.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
Feb. 28, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
Feb. 28, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Feb. 28, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 11.0 μg/m3 (11) 11.0 μg/m3 (46) 46.0
 
Feb. 28, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 13.0 μg/m3 (13) 8.0 μg/m3 (34) 34.0
 
Feb. 28, 2021, midnight N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 13.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Feb. 27, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 13.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Feb. 27, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Feb. 27, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 7.0 μg/m3 (7) 5.0 μg/m3 (21) 30.0
 
Feb. 27, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 9.0 μg/m3 (9) 5.0 μg/m3 (21) 31.0
 
Feb. 27, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 7.0 μg/m3 (7) 6.0 μg/m3 (25) 30.0
 
Feb. 27, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 7.0 μg/m3 (7) 6.0 μg/m3 (25) 29.0
 
Feb. 27, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 8.0 μg/m3 (8) 6.0 μg/m3 (25) 29.0
 
Feb. 27, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 8.0 μg/m3 (8) 6.0 μg/m3 (25) 28.0
 
Feb. 27, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 26.0
 
Feb. 27, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 28.0
 
Feb. 27, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 6.0 μg/m3 (6) -2.0 μg/m3 (0) 30.0
 
Feb. 27, 2021, noon N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 1.0 μg/m3 (1) 1.0 μg/m3 (5) 30.0
 
Feb. 27, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 3.0 μg/m3 (3) -1.0 μg/m3 (0) 31.0
 
Feb. 27, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (5) 31.0
 
Feb. 27, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 7.0 μg/m3 (7) 1.0 μg/m3 (5) 32.0